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#3594 From: PRASHANT JAIN <dei_prashant@...>
Date: Tue Aug 11, 2009 6:48 am
Subject: Re: [2IIM CAT Prep] Numbers 		dei_prashant
Send Email Send Email
 

Wikipedia

In mathematics, the integers a and b are said to be coprime or relatively prime if they have no common positive factor other than 1 or, equivalently, if their greatest common divisor is 1.[1] The notation a  \perp  b is sometimes used to indicate that a and b are relatively prime.[2] 

For example, 6 and 35 are coprime, but 6 and 27 are not coprime because they are both divisible by 3. The number 1 is coprime to every inte

 
so 1*24700 should not be a case .


PRASHANT JAIN
Hyderabad


From: Muskan Soni <soni.muskan@...>
To: ascent4cat@yahoogroups.com
Sent: Friday, 31 July, 2009 1:43:46 PM
Subject: Re: [2IIM CAT Prep] Numbers

 

sandeep 1 * 24700 is also a case,,
so it will get total to 11 cases

--- On Mon, 15/6/09, kirik pinky <kiriknpinky@ yahoo.co. in> wrote:

From: kirik pinky <kiriknpinky@ yahoo.co. in>
Subject: Re: [2IIM CAT Prep] Numbers
To: ascent4cat@yahoogro ups.com
Date: Monday, 15 June, 2009, 1:48 PM

 

Hi,
 
1) 24700 = 247*100 = 13 x 19 x 2^2 x 5^2 (expressed in prime numbers)
 
Number of ways of obtaining m x n such that they are coprime and also mx n = 24700 is
4C1+ 4C2 = 4 + 6 = 10.
 
Hopefully this is right.

Sandeep
IIT MADRAS


--- On Tue, 5/5/09, Maha lakshmi <maha.b.lakshmi@ gmail.com> wrote:

From: Maha lakshmi <maha.b.lakshmi@ gmail.com>
Subject: [2IIM CAT Prep] Numbers
To: ascent4cat@yahoogro ups.com
Date: Tuesday, 5 May, 2009, 1:45 PM

Hi Friends,

 Can any one help in sloving the following problems
 
1) Find the Number of ways in which 24700 can be expressed as a product of two co-primes?
2) Find the smalles number which when divided by 13 leaves 9 as the remainder and when divided by 17 leaves 2 as the remainder?
 
Thanks & Regards,

--

Mahalakshmi. . B


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Reply | Messages in this Topic (10)
#3595 From: Pooja Bhavsar <poojabh_238@...>
Date: Tue Aug 11, 2009 5:38 pm
Subject: Re: [2IIM CAT Prep] Numbers 		poojabh_238
Send Email Send Email
 
1)_
   

HERE, V NEED TO FIND OUT 2 CO PRIME NOS THAT HAS PROUCT AS 24700.

THESE R THE POSSIBILITIES:

13*4  &  19*25

13*25 &  19*4

ANY OTHE COMBINATION U WIL TAKE WILL HAVE H.C.F. IN COMMON SO, MY ANSWER IS 2… PLZ, CONFIRM THIS ONE…


2)_

HERE, WE GET 2 EQ:

13X+9 & 17X+2 NOW THE NO. WUD BE MULTIPLE OF BOTH THIS EQ.

SO YHE NO WUD BE 87 THAT SATISFIES BOTH THE EQ.


From: kirik pinky <kiriknpinky@...>
To: ascent4cat@yahoogroups.com
Sent: Monday, June 15, 2009 6:48:38 AM
Subject: Re: [2IIM CAT Prep] Numbers

 

Hi,
 
1) 24700 = 247*100 = 13 x 19 x 2^2 x 5^2 (expressed in prime numbers)
 
Number of ways of obtaining m x n such that they are coprime and also mx n = 24700 is
4C1+ 4C2 = 4 + 6 = 10.
 
Hopefully this is right.

Sandeep
IIT MADRAS


--- On Tue, 5/5/09, Maha lakshmi <maha.b.lakshmi@ gmail.com> wrote:

From: Maha lakshmi <maha.b.lakshmi@ gmail.com>
Subject: [2IIM CAT Prep] Numbers
To: ascent4cat@yahoogro ups.com
Date: Tuesday, 5 May, 2009, 1:45 PM

Hi Friends,

 Can any one help in sloving the following problems
 
1) Find the Number of ways in which 24700 can be expressed as a product of two co-primes?
2) Find the smalles number which when divided by 13 leaves 9 as the remainder and when divided by 17 leaves 2 as the remainder?
 
Thanks & Regards,

--

Mahalakshmi. B


Bollywood news, movie reviews, film trailers and more! Click here.



Reply | Messages in this Topic (10)
#3596 From: Pooja Bhavsar <poojabh_238@...>
Date: Tue Aug 11, 2009 5:30 pm
Subject: Re: [2IIM CAT Prep] Quant Question 		poojabh_238
Send Email Send Email
 

A: THE NO. WUD BE LIKE THIS 1233668898 (ANY ARRNGEMENT DOESN’T MATTER) BCOZ AS WE KNOW THAT IF U SUBTRACT THE SUM OF NO. FROM THE NO IT WILL BE DIVISIBLE BY 9. SO, ANS WUD BE  = OPTION(2)



From: n suresh <suresh_baabuin@...>
To: ascent4cat@yahoogroups.com
Sent: Monday, June 15, 2009 3:14:32 AM
Subject: Re: [2IIM CAT Prep] Quant Question

 

The answer is 8. Any number subtracted by the sum of its digits will be a multiple of 9.  The total of the remaining digits is 46 and hence the closest multiple of 9 greater than 46 is 54. So ,54-46 is 8.

From: rajendra sahu <r_s_124@yahoo. co.in>
To: ascent4cat@yahoogro ups.com
Sent: Sunday, May 17, 2009 1:04:27 PM
Subject: [2IIM CAT Prep] Quant Question

Hi,
 
Please give solution to the following prob--
 
A teacher wrote a 10 digit number on the board and asked her students to subtract the sum of digits of  the number from the
number. Raju performed the subtraction but accidently erased one of the digits in the result. The remaining digits were 1, 2, 3, 3, 6,
6, 8, 8, 9( not necessarily in that order) which digit did Raju erase?
 
1)    9        2)    8
3)    4        4)     Cannot be determined
 
Rajendra

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Reply | Messages in this Topic (13)
#3597 From: mohamed rafeek <jmrafeek_jmc@...>
Date: Wed Aug 12, 2009 9:50 am
Subject: Re: [2IIM CAT Prep] Numbers ques 		jmrafeek_jmc
Send Email Send Email
 
Yes It has a small Formula. Don't you know that?
      First we write like this   7+14 +21+ ...........+994
 ( this is the Numbers divisible by 7 within 1000).
      Then we takeout the common value from the above form like this
                                    =   7(1+2+3+.........+142)
        Here is a formula to calculate the value (1+2+3+.........+142). The Formula is n(n+1)/2. Where n=142.

Thanks
jmrafeek

--- On Sat, 1/8/09, Pooja Bhavsar <poojabh_238@...> wrote:

From: Pooja Bhavsar <poojabh_238@...>
Subject: Re: [2IIM CAT Prep] Numbers ques
To: ascent4cat@...
Date: Saturday, 1 August, 2009, 1:50 AM

 
How to get sum of all multiple of 7 between 1 to 1000. Any formula?? 
no such formulae is i know...
bt this is the simple method
=7{1+2+3+... ..+142}
=7*10153
=71071.....

From: gagan kumar <gagan_ks@yahoo. .co.in>
To: ascent4cat@yahoogro ups.com
Sent: Sunday, July 19, 2009 9:16:54 PM
Subject: [2IIM CAT Prep] Numbers ques

 
How to get sum of all multiple of 7 between 1 to 1000. Any formula?? 

~Gagan

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Reply | Messages in this Topic (11)
#3598 From: paramanu roy <param_roy@...>
Date: Thu Sep 3, 2009 12:08 pm
Subject: Re: [2IIM CAT Prep] quant question. 		param_roy
Send Email Send Email
 
had raamu added all pages propoerly, n*(n+1)/2 = 1023 + x
=> n=45(i.e.total pages), and 45*46=2070=2046+2x
=> x=12 no. page !
 
......cheers !
Take best care of yourself ....and keep smiling !

 

P.ROY

+91-9873326542

--- On Tue, 28/7/09, sunil singla <sunil_singla2004@...> wrote:


From: sunil singla <sunil_singla2004@...>
Subject: Re: [2IIM CAT Prep] quant question.
To: ascent4cat@yahoogroups.com
Date: Tuesday, 28 July, 2009, 11:12 AM

 
dear friend
 
as ramu has added the pages from 1 to n so n*(n+1)/2 must be greater than 1023 as he had left one page..
 
so n * (n+1)/2 >1023
 
i.e. n>45
if we take n=45
n * (n+1)/2 = 1035 i.e he has forgotten 12 n. page ..
but the question asked for maximum
 
so we have to check for n = 46 also so n*(n+1)/2 = 1081.
i.e he has forgotten the no. 1081 - 1023 = 58 which is not possible as total no. of pages is 46. 
so answer is 45 total pages n he has left 12 no. page...
enjoy....... .....
 
sunil singla
B.E. (Civil Engineering)
design engineer

--- On Sat, 6/20/09, satbir singh r wasu <satbirsinghr@ yahoo.co. in> wrote:

From: satbir singh r wasu <satbirsinghr@ yahoo.co. in>
Subject: [2IIM CAT Prep] quant question.
To: rajiv_simply4u@ yahoo.co. in, pranav.parikh@ yahoo.com, ndaschakladar@ gmail.com, rahilsahu@yahoo. co.in, kuldeep_passion@ yahoo.com, mayur_indianmgr@ rediffmail. com, nivedita_mehra@ daiict.ac. in, rajshri.modi@ yahoo.co. in, ranakripal@yahoo. co.in, varun.caporegime@ gmail.com, visal_k_22@yahoo. co.in, sa.vickram@gmail. com, anil_sms_jntu@ yahoo..com, krishna_el_186@ yahoo.com, davidj_john@ infosys.com, khan_rahmathmd@ yahoo.com, buddevarun@yahoo. co.in, rj_zealous@yahoo. co.in, shashank_krrish@ yahoo.co. in, prasad_pp99@ yahoo.co. in, rockingpinku@ yahoo.co. in, ascent4cat@yahoogro ups.com
Date: Saturday, June 20, 2009, 12:46 PM

 

 Ramu started adding the digits of the page number of a book starting from first page. after he finished his addition he had a total of 1023.he missed adding the digit of one page number.
 
what could be the maximum no. of pages in the book & why ?
which could be the page number that ramu missed ?
 
 
 
Regards,

S R Wasu.

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Reply | Messages in this Topic (8)
#3599 From: Nachiket Joshi <nachiket.xcoepian@...>
Date: Thu Sep 3, 2009 6:01 am
Subject: Re: [2IIM CAT Prep] Remainder Theorem 		jnash_13
Send Email Send Email
 
the number 17x + 5 where x is a whole number, is when divided by 17, will always give a remainder 5. when this number is divided by 357 for x = 21, remainder is 5. but for some other value of x, say 22 remainder is 22, for x = 23 remainder is 39 and so on. so, according to me, answer is indeterminable.

On 7/29/09, chayankag <chayankag@...> wrote:
 

Question
A number when divided by 17 leaves a remainder 5. What remainder would be obtained by dividing the same number by 357?
(a) 8 (b) 5 (c) 29 (d) 39

Ans- 39....... WHY

[if we take (357+5=362) then it should be 5.]




--
Thanks and Regards,
Nachiket Joshi

--- Aim HIGH... Dream HIGH...
Low Aim is a CRIME...!!!

Reply | Messages in this Topic (4)
#3600 From: satbir singh r wasu <satbirsinghr@...>
Date: Sat Aug 15, 2009 4:51 pm
Subject: Re: [2IIM CAT Prep] quant question. 		satbirsinghr
Send Email Send Email
 
here addition of digits is referred and not the each page number.
please see to it.
 
Correct solution to the answer given by you:

when we add 119 nos. its total comes to 1023.

it is said that one number is missed out.
1) to find max. no. of pages in the book, missed out number should be such that sum of digit is maximum, so it should be 99. and 9+9=18.

and when we add sum of digits of 120,121,122,123. it comes to exact 18.
so ans. is 123.

2) 99 could be the page number that ramu missed.

For any futher clarification please feel free to contact.

- Satbir Singh.


From: akash goel <akash_3512@...>
To: rajiv_simply4u@...; pranav.parikh@...; ndaschakladar@...; rahilsahu@...; kuldeep_passion@...; mayur_indianmgr@...; nivedita_mehra@...; rajshri.modi@...; ranakripal@...; varun.caporegime@...; visal_k_22@...; sa.vickram@...; anil_sms_jntu@...; krishna_el_186@...; davidj_john@...; khan_rahmathmd@...; buddevarun@...; rj_zealous@...; shashank_krrish@...; prasad_pp99@...; rockingpinku@...; ascent4cat@yahoogroups.com
Sent: Friday, 7 August, 2009 10:49:29 AM
Subject: Re: [2IIM CAT Prep] quant question.

 

HI All
 
The maximum no that is possible is 45.
As sum of a series is n*(n+1)/2
Also the missing no =27 as sum of the first 45 digit is 1050.

akash goel

--- On Sat, 20/6/09, satbir singh r wasu <satbirsinghr@ yahoo.co. in> wrote:

From: satbir singh r wasu <satbirsinghr@ yahoo.co. in>
Subject: [2IIM CAT Prep] quant question.
To: rajiv_simply4u@ yahoo.co. in, pranav.parikh@ yahoo.com, ndaschakladar@ gmail.com, rahilsahu@yahoo. co.in, kuldeep_passion@ yahoo.com, mayur_indianmgr@ rediffmail.. com, nivedita_mehra@ daiict.ac. in, rajshri.modi@ yahoo.co. in, ranakripal@yahoo. co.in, varun.caporegime@ gmail.com, visal_k_22@yahoo. co.in, sa.vickram@gmail. com, anil_sms_jntu@ yahoo.com, krishna_el_186@ yahoo.com, davidj_john@ infosys.com, khan_rahmathmd@ yahoo.com, buddevarun@yahoo. co.in, rj_zealous@yahoo. co.in, shashank_krrish@ yahoo.co. in, prasad_pp99@ yahoo.co. in, rockingpinku@ yahoo.co. in, ascent4cat@yahoogro ups.com
Date: Saturday, 20 June, 2009, 12:46 PM

 

 Ramu started adding the digits of the page number of a book starting from first page. after he finished his addition he had a total of 1023.he missed adding the digit of one page number.
 
what could be the maximum no. of pages in the book & why ?
which could be the page number that ramu missed ?
 
 
 
Regards,

S R Wasu.

ICC World Twenty20 England '09 exclusively on YAHOO! CRICKET

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Yahoo! recommends that you upgrade to the new and safer Internet Explorer 8.

Reply | Messages in this Topic (8)
#3601 From: Jacky Sinha <jacky.sinha@...>
Date: Tue Sep 1, 2009 5:12 am
Subject: Re: [2IIM CAT Prep] Digest Number 752 		jacky.sinha
Send Email Send Email
 

answer(145)     
                                 let the number is x

as we know that number- 13x+2 or x=13-2=11 so that,number=
                                                     divider*divident+remainder or
                                                  11*13+2=145
                                                                                   
      so that in case of 2nd term as same like above                                                          
                                                                17x+9 or x = 17-9 =8
                                                after that, 8*17+9=145 
                                                                                    so,145 is ans.
                                                 






From: "ascent4cat@yahoogroups.com" <ascent4cat@yahoogroups.com>
To: ascent4cat@yahoogroups.com
Sent: Tuesday, 25 August, 2009 3:14:39 PM
Subject: [2IIM CAT Prep] Digest Number 752

Messages In This Digest (8 Messages)

1a.
Re: Numbers From: ponmalargs_cse
1b.
Re: Numbers From: prakash awasthy
2a.
Re: doubt From: Rahul Jain
2b.
Re: doubt From: ManMohanPuri
3a.
Re: Numbers ques From: ashok_rrsa
3b.
Re: Numbers ques From: sunil singla
4a.
Re: (unknown) From: Rahil Sahu
5a.
Re: Quant Numbers ques From: Rahul Jain

Messages

1a.

Re: Numbers

Posted by: "ponmalargs_cse" ponmalargs@...   ponmalargs_cse

Mon Aug 24, 2009 3:03 am (PDT)



hi,
answer for 1 question is 8
Number of ways a number can be expressed as a product of two co-primes is 2^(n-1) (^ - power, n - different prime factors of d number).
here 24700=13*19* 5*5*2*2
n=4
so 2^3 = 8

--- In ascent4cat@yahoogro ups.com, vimlesh patelia <vimlesh_21mech@ ...> wrote:
>
> Hi Maha Lakshmi,
>
> Answer for your second question is 87(13*6+9,17* 5+2).
>
>
> Regards,
> Vimlesh
>
>
>
>
> ____________ _________ _________ __
> From: Maha lakshmi <maha.b.lakshmi@ ...>
> To: ascent4cat@yahoogro ups.com
> Sent: Tuesday, 5 May, 2009 1:45:52 PM
> Subject: [2IIM CAT Prep] Numbers
>
>
>
>
>
> Hi Friends,
>
> Can any one help in sloving the following problems
>
> 1) Find the Number of ways in which 24700 can be expressed as a product of two co-primes?
> 2) Find the smalles number which when divided by 13 leaves 9 as the remainder and when divided by 17 leaves 2 as the remainder?
>
> Thanks & Regards,
> --
>
> Mahalakshmi. B
>
>
>
>
>
> Own a website..Get an unlimited package.Pay next to nothing.*Go to http://in.business. yahoo.com/
>

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Messages in this topic (8)
1b.

Re: Numbers

Posted by: "prakash awasthy" prakash.awasthy@...   prak_awasthy

Mon Aug 24, 2009 3:03 am (PDT)



hi maha lakshmi

as vimlesh said answer 87 is right method to get is...

Number ca be written as 13d1+9 = 17d2+2

or 13d1+7 = 17*d2......
so we have to find a smallest value of d1 such that 13d1+7 ..is copletly
divisible by 17...
we get this value for d1=6...that is 13*6+7==85
but this 85 == 13d1+7..and our number was 13d1+9....so the required smallest
no. is 87....

On Mon, Jun 15, 2009 at 12:56 PM, vimlesh patelia
<vimlesh_21mech@ yahoo.com>wrote:

>
>
> Hi Maha Lakshmi,
> Answer for your second question is 87(13*6+9,17* 5+2).
>
> *Regards,*
> *Vimlesh*
>
>
> ------------ --------- ---------
> *From:* Maha lakshmi <maha.b.lakshmi@ gmail.com>
> *To:* ascent4cat@yahoogro ups.com
> *Sent:* Tuesday, 5 May, 2009 1:45:52 PM
> *Subject:* [2IIM CAT Prep] Numbers
>
> Hi Friends,
>
> Can any one help in sloving the following problems
>
> 1) Find the Number of ways in which 24700 can be expressed as a product of
> two co-primes?
> 2) Find the smalles number which when divided by 13 leaves 9 as the
> remainder and when divided by 17 leaves 2 as the remainder?
>
> Thanks & Regards,
>
> --
>
> Mahalakshmi. B
>
>
> ------------ --------- ---------
> Cricket on your mind? Visit the ultimate cricket website. Enter now!<http://in.rd. yahoo..com/ tagline_cricket_ 1/*http:/ /beta.cricket. yahoo.com>
>
>

--
Prakash Awasthy
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Messages in this topic (8)
2a.

Re: doubt

Posted by: "Rahul Jain" championishere007@...   championishere007

Mon Aug 24, 2009 3:03 am (PDT)



The correct answer is 741. You need to remove all the points on the
hypotenuse so formed, and the other two sides also.
Its forms a triangle with a total of [(1/2 * 41*41)] = 840.5 area or approx
841 points. Now, the hypotenuse is of length = sqrt(41^2 + 41^2) . Then
subtract the other sides and you get the final answer as 741 :)

On Thu, Jul 16, 2009 at 8:32 PM, sharada sahoo <rockingpinku@ yahoo.co. in>wrote:

>
>
> 741
>
> --- On *Mon, 15/6/09, Haneef Mohammad <haneef0786@gmail. com>* wrote:
>
>
> From: Haneef Mohammad <haneef0786@gmail. com>
> Subject: Re: [2IIM CAT Prep] doubt
> To: ascent4cat@yahoogro ups.com
> Date: Monday, 15 June, 2009, 11:45 AM
>
> Half of points in square formed by (0,0) (41,0) (0,41) (41,41)
>
> excluding the points on the boundary, 40*40 / 2
>
> Answer: 800
>
>
>
> On Mon, May 11, 2009 at 10:55 PM, satbir singh r wasu <satbirsinghr@
> yahoo.co. in<http://in.mc941.. mail.yahoo. com/mc/compose? to=satbirsinghr@ yahoo.co. in>
> > wrote:
>
>>
>>
>>
>>
>> consider a triangle drawn on the x-y plane with its three vertices of
>> (41,0),(0,41) and (0,0) each vertex being represented by its (x,y)
>> coordinates. The number of points with integer coordinates inside the
>> triangle (excluding all the points on the boundary)is
>> 1)780
>> 2)800
>> 3)820
>> 4)741
>>
>>
>> please explain with brief explanation.
>>
>> Regards,
>> Satbir singh.
>>
>>
>> ------------ --------- ---------
>> Cricket on your mind? Visit the ultimate cricket website. Enter now!<http://in.rd. yahoo..com/ tagline_cricket_ 1/*http:/ /beta.cricket. yahoo.com>
>>
>
>
> ------------ --------- ---------
> Looking for local information? Find it on Yahoo! Local<http://in.rd. yahoo.com/ tagline_local_ 1/*http:/ /in.local. yahoo.com/>
>
>

--
------------ --------- ---------
RAHUL JAIN
rahul_jain@daiict. ac.in
Ph.no.: 9328067371
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Messages in this topic (10)
2b.

Re: doubt

Posted by: "ManMohanPuri" mmpuri@...   purimmpuri

Mon Aug 24, 2009 3:04 am (PDT)




The integer point plotted in a square on this x and y axis are ;

x=( 1 to 40)
y =(1 to 40)

total point plotted in a square on this x and y axis are =40 X 40
=1600
integer point plotted o the diagnol of this square :

x= (1 ---40)
y= (40----1)

integer point plotted on the diagnol of this square :(x,y) are (1,41),(2,39) -----

40 integer point plotted on the diagnol of this square

The integer point plotted in a square on this x and y axis less 40 integer point plotted on the diagnol of this square are the integral points in the square to be divided by 2 will give integer point plotted on the triangle in the question

1600-40=1560

1560/2=780=Answer

THE INTEGER POINTS PLOTTED IN H
On Fri, 17 Jul 2009 18:11:28 +0530 wrote
>The integer points which can be plotted are (1,1),(1,2), (1,3).... ......... ....(1,39) ,(2,1),(2,2) ,(2,3)... ......... ......(2, 38)...... ........last would be (39,1)
>The total sum is equal to 39+38+...... .1
>39*40/2=780
>
>
>--- On Mon, 15/6/09, Haneef Mohammad wrote:
>
>From: Haneef Mohammad
>Subject: Re: [2IIM CAT Prep] doubt
>To: ascent4cat@yahoogro ups.com
>Date: Monday, 15 June, 2009, 11:45 AM
>
>
>
>
>
>
>
>
>
>
>
>    
>                  Half of points in square formed by (0,0) (41,0) (0,41) (41,41)
>
>excluding the points on the boundary, 40*40 / 2
>
>Answer: 800
>
>
>
>On Mon, May 11, 2009 at 10:55 PM, satbir singh r wasu wrote:
>
>
>
>
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>    
>            
>            
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>      
>      
>
>consider a triangle drawn on the x-y
>plane with its three vertices ),(0,41of (41,0) and (0,0) each vertex being
>represented by its (x,y) coordinates. The number of points with integer
>coordinates inside the triangle (excluding all the points on the boundary)is
>
>
>1)780
>
>2)800
>
>3)820
>
>4)741
>
>
>
>
>
>
>please explain with brief explanation.
>
>
>
>Regards,
>
>Satbir singh.
>
>
>
>
>
>
>
>       Cricket on your mind? Visit the ultimate cricket website.  Enter now!
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Messages in this topic (10)
3a..

Re: Numbers ques

Posted by: "ashok_rrsa" ashok_rrsa@...   ashok_rrsa

Mon Aug 24, 2009 3:04 am (PDT)



--- In ascent4cat@yahoogro ups.com, gagan kumar <gagan_ks@.. .> wrote:
>
> How to get sum of all multiple of 7 between 1 to 1000. Any formula?? 
>
> ~Gagan
>
>
> Yahoo! recommends that you upgrade to the new and safer Internet Explorer 8. http://downloads. yahoo.com/ in/internetexplo rer/
>
SOLUTION-

as u know minimum no. of multiple is 1 and maximum multiple is 1000/7=142 then 7(1+2+3+4+.. .....142) = 142/2[2*1+(142- 1)1]=10153, answer

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Messages in this topic (9)
3b.

Re: Numbers ques

Posted by: "sunil singla" sunil_singla2004@...   sunil_singla2004

Mon Aug 24, 2009 3:04 am (PDT)



multiples of seven
are 7,14,21,.... ......... 994
sum is 7*(1+2+3+4+5+ ......... ..+142)
= 7*142*143/2
 
= 71071

--- On Mon, 7/20/09, gagan kumar <gagan_ks@yahoo. co.in> wrote:

From: gagan kumar <gagan_ks@yahoo. co.in>
Subject: [2IIM CAT Prep] Numbers ques
To: ascent4cat@yahoogro ups.com
Date: Monday, July 20, 2009, 9:46 AM

 

How to get sum of all multiple of 7 between 1 to 1000. Any formula?? 

~Gagan

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Messages in this topic (9)
4a.

Re: (unknown)

Posted by: "Rahil Sahu" rahilsahu@...   rahilsahu

Mon Aug 24, 2009 3:04 am (PDT)



Hi kapil,

a+b+c+d do 1/20th of the work in a day.

1/4th work takes 5 days.

After A left, additional 6 days required. Hence b+c+d take (15+6) = 21 days for 3/4th work
b+c+d do 3/4*1/21 of the work in a day ==> b+c+d will complete the whole of work in 28 days

1/2 work now takes 5 + 7 = 12 days

B left,additional 4 days required. Hence c+d take (14 + 4) = 18 days for 1/2 work
c+d do 1/2*1/18 of the work in a day ==> c+d will complete the whole work in 36 days.

3/4 work now takes 5+7+9 = 21days

C left. addtional 2 days required. Hence d takes 9+2 = 11days to do 1/4th work
d will take 1 / (1/4 *1/11) = 44 days to complete whole work.

1/c + 1/d = 1/36
1/c + 1/44 = 1/36

c= 198 days

Rahil Sahu
Naval Architect
VEDAM Design & Techinal Consultancy Pvt. Ltd.
Ph - 91-22-6670 9192
www.vedamindia. com

____________ _________ _________ __
From: Kapil Bhatia <kapi_007@ymail. com>
Sent: Sunday, 19 July, 2009 1:31:50 PM
Subject: [2IIM CAT Prep] (unknown)

hi all.....

A+B+C+D cn together do a peice of work in 20days.
after 1/4th of work is complete A left & 6 more days r needed to complete job.
after 1/2th ,, ,, ,,, ,, B,, ,, 4 ,, ,, ,, ,, ,,, ,, ,,
after 3/4th ,, ,,, ,, C ,,,, 2 ,, ,, ,, ,,
In how many days'll C finish the job alone??????

Good Day

Kapil Bhatia

____________ _________ _________ __
See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz.


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Messages in this topic (3)
5a.

Re: Quant Numbers ques

Posted by: "Rahul Jain" championishere007@...   championishere007

Mon Aug 24, 2009 3:06 am (PDT)



If the sum of the digits is equal to 9, the number is a multiple of 9. Now
find the first multiple of 9 that comes after 1000. It would be 1008. Now
count the last one ending before 10000 and that has to be 9999.
The respective quotients are 112 and 1111. Hence, the total numbers having
sum of digits as 9 is (1111-112+1) = 1000. The method by Narayana Reddy can
be flawed at times wen the number just starts with a multiple of 9 and ends
with one, but the above method is full proof. :)
Cheers:)
Rahul

On Thu, Jul 16, 2009 at 7:57 PM, Narayana Reddy <email2reddy@ gmail.com>wrote:

>
>
> Ans = 1000
> Solution:
> (10000 - 1000) / 9
>
> On Sun, Jun 14, 2009 at 11:58 AM, vaibhav
> varshney<vaibhav_3758@ yahoo.co. in <vaibhav_3758% 40yahoo.co. in>> wrote:
> >
> >
> > How many integers between 1000 and 10000 have the sum of their digits
> equal
> > to 9?
> > a) 112
> > b) 132
> > c) 126
> > d) 165
> > Tell me the shortest method to solve it...
> >
> > vaibhav
> > ____________ _________ _________ __
> > Explore and discover exciting holidays and getaways with Yahoo! India
> Travel
> > Click here!
> >
>
>

--
------------ --------- ---------
RAHUL JAIN
rahul_jain@daiict. ac.in
Ph.no.: 9328067371
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Reply | Messages in this Topic (1)
#3602 From: Rajeev kumar <rajeev2mail@...>
Date: Tue Sep 8, 2009 7:29 am
Subject: Plese sir verify me doubt 		rajeev2mail
Send Email Send Email
 
1!*2!*3!*4!*5!*6!*..................100! .find the number of zero?

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Reply | Messages in this Topic (6)
#3603 From: umang bhatt <umang30bhatt@...>
Date: Thu Sep 10, 2009 2:46 pm
Subject: (No subject) 		umang30bhatt
Send Email Send Email
 
Hi
I am a 3rd year B.E. student.I want to give CAT this year just for feeling the exam tension and toughness.can i able to do this?
can i in my 3rd year be allowed to give CAT just for practise for the final year.
Please reply anyone.
can they check whether a student is in 3 0r 4 year.


Love Cricket? Check out live scores, photos, video highlights and more. Click here.

Reply | Messages in this Topic (4)
#3604 From: Rahul Jain <championishere007@...>
Date: Thu Sep 3, 2009 5:53 pm
Subject: Re: [2IIM CAT Prep] Remainder Theorem 		championishe...
Send Email Send Email
 
This is an incomplete question. Lets take the number as 22. It satisfies the condition of leaving remainder as 5 when divided by 17 but no answer matches when we divide it by 357. Similarly other numbers which do not match the criteria are 56, 73 etc,,,,



On Wed, Jul 29, 2009 at 4:38 PM, chayankag <chayankag@...> wrote:
 

Question
A number when divided by 17 leaves a remainder 5. What remainder would be obtained by dividing the same number by 357?
(a) 8 (b) 5 (c) 29 (d) 39

Ans- 39....... WHY

[if we take (357+5=362) then it should be 5.]




--
------------------------------
RAHUL JAIN
rahul_jain@...
Ph.no.: 9328067371




Reply | Messages in this Topic (4)
#3605 From: anirudh mishra <anirudhmshr@...>
Date: Sat Sep 12, 2009 3:29 pm
Subject: Re: [2IIM CAT Prep] (unknown) 		anirudhmshr
Send Email Send Email
 
no its not possible as they want proof of ur eligibility when u apply !
earlier it was possible!

--- On Thu, 10/9/09, umang bhatt <umang30bhatt@...> wrote:

From: umang bhatt <umang30bhatt@...>
Subject: [2IIM CAT Prep] (unknown)
To: ascent4cat@yahoogroups.com
Date: Thursday, 10 September, 2009, 8:16 PM

 
Hi
I am a 3rd year B.E. student.I want to give CAT this year just for feeling the exam tension and toughness.can i able to do this?
can i in my 3rd year be allowed to give CAT just for practise for the final year.
Please reply anyone.
can they check whether a student is in 3 0r 4 year.


Love Cricket? Check out live scores, photos, video highlights and more. Click here.

See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz.

Reply | Messages in this Topic (4)
#3606 From: Prakash Kumar <prakash_boston@...>
Date: Sat Sep 12, 2009 3:52 am
Subject: Re: [2IIM CAT Prep] (unknown) 		prakash_boston
Send Email Send Email
 

legally it is not allowed.
Illegally you can decoy as final year appearing canidate and write the exam.
--- On Thu, 9/10/09, umang bhatt <umang30bhatt@...> wrote:

From: umang bhatt <umang30bhatt@...>
Subject: [2IIM CAT Prep] (unknown)
To: ascent4cat@yahoogroups.com
Date: Thursday, September 10, 2009, 10:46 AM

 
Hi
I am a 3rd year B.E. student.I want to give CAT this year just for feeling the exam tension and toughness.can i able to do this?
can i in my 3rd year be allowed to give CAT just for practise for the final year.
Please reply anyone.
can they check whether a student is in 3 0r 4 year.


Love Cricket? Check out live scores, photos, video highlights and more. Click here.


Reply | Messages in this Topic (4)
#3607 From: aditya nair <adityaseven@...>
Date: Sat Sep 12, 2009 7:57 am
Subject: Re: [2IIM CAT Prep] Plese sir verify me doubt 		adityaseven
Send Email Send Email
 
1124
 
Regards,
Aditya


From: Rajeev kumar <rajeev2mail@...>
To: ascent4cat@yahoogroups.com
Sent: Tuesday, 8 September, 2009 12:59:46 PM
Subject: [2IIM CAT Prep] Plese sir verify me doubt

 

1!*2!*3!*4!* 5!*6!*... ......... ......100! .find the number of zero?

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Reply | Messages in this Topic (6)
#3608 From: pallab kumar <pallab_biswas2000@...>
Date: Fri Sep 11, 2009 4:23 pm
Subject: Re: [2IIM CAT Prep] (unknown) 		pallab_biswa...
Send Email Send Email
  
No you can not sit for the exam.Pls visit "www.catiim.in"
--- On Thu, 10/9/09, umang bhatt <umang30bhatt@...> wrote:

> From: umang bhatt <umang30bhatt@...>
> Subject: [2IIM CAT Prep] (unknown)
> To: ascent4cat@yahoogroups.com
> Date: Thursday, 10 September, 2009, 8:16 PM
>
>
>
>
>
>
>
>
>
>
>
>
>  
>
>
>
>
>
>                   HiI am a 3rd year B.E. student.I
> want to give CAT this year just for feeling the exam tension
> and toughness.can i able to do this?can i in my
> 3rd year be allowed to give CAT just for practise for the
> final year.Please reply anyone.can
> they check whether a student is in 3 0r 4 year.
>
>
>        Love Cricket? Check out live scores,
> photos, video highlights and more.
> Click here.
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>


       Yahoo! India has a new look. Take a sneak peek http://in.yahoo.com/trynew

Reply | Messages in this Topic (4)
#3609 From: vishesh gavli <kick_off38@...>
Date: Fri Sep 11, 2009 8:14 am
Subject: Re: [2IIM CAT Prep] Plese sir verify me doubt 		kick_off38
Send Email Send Email
 
ans-->>  924 zeros

--- On Tue, 9/8/09, Rajeev kumar <rajeev2mail@...> wrote:

From: Rajeev kumar <rajeev2mail@...>
Subject: [2IIM CAT Prep] Plese sir verify me doubt
To: ascent4cat@yahoogroups.com
Date: Tuesday, September 8, 2009, 12:59 PM

 
1!*2!*3!*4!* 5!*6!*... ......... ......100! .find the number of zero?

See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz.


Reply | Messages in this Topic (6)
#3610 From: prakash awasthy <prakash.awasthy@...>
Date: Fri Sep 11, 2009 10:07 am
Subject: Re: [2IIM CAT Prep] Plese sir verify me doubt 		prak_awasthy
Send Email Send Email
 
see in these kind of questions you actually need to find the no. of 5s in the expression...you must be knowing how to find no. of 5s in any factorial......

like

4! has no 5
5! to 9! each  has one five
10! to 14! each has 2 five etc

25! has 5+1= 6 etc

inthis way u can make series

4*0+ 5(1+2+3+4+6+7+8+9+10+12+13+14+15+16+18+19+20+21+22+24)

== 5*(sum(1 to 24 ) - 5 -11 - 17 - 23)

== 5*(24*25/2  - 56)

== 5*(300-56)

== 1220.................number of zeros.....

On Tue, Sep 8, 2009 at 12:59 PM, Rajeev kumar <rajeev2mail@...> wrote:
 

1!*2!*3!*4!*5!*6!*..................100! .find the number of zero?

See the Web's breaking stories, chosen by people like you. Check out Yahoo! Buzz.



--
Prakash Awasthy

Reply | Messages in this Topic (6)
#3611 From: "mbansal4" <mbansal4@...>
Date: Fri Sep 11, 2009 11:02 am
Subject: Re: [2IIM CAT Prep] quant question. 		mbansal4
Send Email Send Email
  
--- In ascent4cat@yahoogroups.com, satbir singh r wasu <satbirsinghr@...> wrote:
>
> here addition of digits is referred and not the each page number.
> please see to it.
>
> Correct solution to the answer given by you:
>
> when we add 119 nos. its total comes to 1023.
>
> it is said that one number is missed out.
> 1) to find max. no. of pages in the book, missed out number should be such
that sum of digit is maximum, so it should be 99. and 9+9=18.
>
> and when we add sum of digits of 120,121,122,123. it comes to exact 18.
> so ans. is 123.
>
> 2) 99 could be the page number that ramu missed.
>
> For any futher clarification please feel free to contact.
>
> - Satbir Singh.
>
>
>
>
>
> ________________________________
> From: akash goel <akash_3512@...>
> To: rajiv_simply4u@...; pranav.parikh@...; ndaschakladar@...; rahilsahu@...;
kuldeep_passion@...; mayur_indianmgr@...; nivedita_mehra@...; rajshri.modi@...;
ranakripal@...; varun.caporegime@...; visal_k_22@...; sa.vickram@...;
anil_sms_jntu@...; krishna_el_186@...; davidj_john@...; khan_rahmathmd@...;
buddevarun@...; rj_zealous@...; shashank_krrish@...; prasad_pp99@...;
rockingpinku@...; ascent4cat@...
> Sent: Friday, 7 August, 2009 10:49:29 AM
> Subject: Re: [2IIM CAT Prep] quant question.
>
>  
> HI All
>
> The maximum no that is possible is 45.
> As sum of a series is n*(n+1)/2
> Also the missing no =27 as sum of the first 45 digit is 1050.
>
> akash goel
>
> --- On Sat, 20/6/09, satbir singh r wasu <satbirsinghr@ yahoo.co. in> wrote:
>
>
> >From: satbir singh r wasu <satbirsinghr@ yahoo.co. in>
> >Subject: [2IIM CAT Prep] quant question.
> >To: rajiv_simply4u@ yahoo.co. in, pranav.parikh@ yahoo.com, ndaschakladar@
gmail.com, rahilsahu@yahoo. co.in, kuldeep_passion@ yahoo.com, mayur_indianmgr@
rediffmail. com, nivedita_mehra@ daiict.ac. in, rajshri.modi@ yahoo.co. in,
ranakripal@yahoo. co.in, varun.caporegime@ gmail.com, visal_k_22@yahoo. co.in,
sa.vickram@gmail. com, anil_sms_jntu@ yahoo.com, krishna_el_186@ yahoo.com,
davidj_john@ infosys.com, khan_rahmathmd@ yahoo..com, buddevarun@yahoo. co.in,
rj_zealous@yahoo. co.in, shashank_krrish@ yahoo.co. in, prasad_pp99@ yahoo.co.
in, rockingpinku@ yahoo.co. in, ascent4cat@yahoogro ups.com
> >Date: Saturday, 20 June, 2009, 12:46 PM
> >
> >
> > 
> >
> > Ramu started adding the digits of the page number of a book starting from
first page. after he finished his addition he had a total of 1023.he missed
adding the digit of one page number.
> >
> >what could be the maximum no. of pages in the book & why ?
> >which could be the page number that ramu missed ?
> >
> >
> >Regards,
> >
> >S R Wasu.
> >________________________________
> ICC World Twenty20 England '09 exclusively on YAHOO! CRICKET
>
> ________________________________
> Yahoo! recommends that you upgrade to the new and safer Internet Explorer 8.
>
>
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>       Looking for local information? Find it on Yahoo! Local
http://in.local.yahoo.com/
>

Hi
    Could you please elaborate ur solution as i didnt get it????

Reply | Messages in this Topic (8)
#3612 From: "shivam_pradhan" <vcpradhan@...>
Date: Mon Sep 14, 2009 7:22 am
Subject: Re: Quant Question 		shivam_pradhan
Send Email Send Email
  
--- In ascent4cat@yahoogroups.com, n suresh <suresh_baabuin@...> wrote:
>
> The answer is 8. Any number subtracted by the sum of its digits will be a
multiple of 9.  The total of the remaining digits is 46 and hence the closest
multiple of 9 greater than 46 is 54. So ,54-46 is 8.
>
>
>
>
> ________________________________
> From: rajendra sahu <r_s_124@...>
> To: ascent4cat@yahoogroups.com
> Sent: Sunday, May 17, 2009 1:04:27 PM
> Subject: [2IIM CAT Prep] Quant Question
>
>
>
>
>
> Hi,
>
> Please give solution to the following prob--
>
> A teacher wrote a 10 digit number on the board and asked her students to
subtract the sum of digits of  the number from the
> number. Raju performed the subtraction but accidently erased one of the digits
in the result. The remaining digits were 1, 2, 3, 3, 6,
> 6, 8, 8, 9( not necessarily in that order) which digit did Raju erase?
>
> 1)    9        2)    8
> 3)    4        4)     Cannot be determined
>
> Rajendra
> ________________________________
>  Explore and discover exciting holidays and getaways with Yahoo! India Travel
Click here!
>

Reply | Messages in this Topic (13)
#3613 From: "mfmithani" <mfmithani@...>
Date: Sun Sep 13, 2009 6:20 pm
Subject: Should I prepare for CAT 2009 		mfmithani
Send Email Send Email
  
Hi All,

Please have a look at my Academic and Professional work experience below and let
me know if it is worth to prepare for CAT?

Do you think I would not be rejected in first place even if I clear CAT on the
basis of my poor academic scores?



SSC  (10th) – 65% - Pune Board - 1994

HSSC (12th) – 53% - Science/Math - Pune Board -1996

B. Sc (3 yrs) 62% - Life Science – Nagpur Board - 1999

MCA (3 yrs) – 57% - Computer Science – 2007 - IGNOU (Open University, distance
learning) – New Delhi



Work Experience -112 months (9 + Yrs)

Computer Science – Information Technology

Professional Certifications –

5 Vendors 8 Certifications–      Project Management Professional – PMP® (PMI)

                                                 Microsoft (MCP, MCP+I, MCSE,
MCTS)

Cisco (CCNA)

Exin (ITIL)

PlateSpin (CPSA)



I have registered online for CAT 2009



I have not yet started preparation of CAT 2009.



Let me know your suggestion and comments.



Cheers,

Cating

Reply | Messages in this Topic (1)
#3614 From: Dhaval <mystudymail@...>
Date: Sat Sep 19, 2009 4:50 am
Subject: time & distance 		bhandari_dhaval
Send Email Send Email
 
Time & Distance problems...pls discuss the method.

1] A man performs 2/25 of his journey by bus, 21/50 by car    and the remaining 2 km on foot. find the total journey

2] A car covers 420 km with constant speed. if its speed were 10km/h more it would have taken 1 hr less to cover the distance. find the speed of the car.

Reply | Messages in this Topic (7)
#3615 From: sri ram <sarkram@...>
Date: Fri Sep 18, 2009 2:49 am
Subject: Re: [2IIM CAT Prep] Quant Question 		sarkram8713
Send Email Send Email
 

Can anyone please help me out, what would be the answer for the below question(series)…..

 

    1             1                  1                            1

-------  +   ---------     + ---------+. . . . . . . + ----------

(5)(8)      (8)(11)          (11)(14)                 (242)(245)

 

 

Regards,

Sriram Kothandaraman

On Tue, Aug 11, 2009 at 11:00 PM, Pooja Bhavsar <poojabh_238@...> wrote:
 

A: THE NO. WUD BE LIKE THIS 1233668898 (ANY ARRNGEMENT DOESN’T MATTER) BCOZ AS WE KNOW THAT IF U SUBTRACT THE SUM OF NO. FROM THE NO IT WILL BE DIVISIBLE BY 9. SO, ANS WUD BE  = OPTION(2)



From: n suresh <suresh_baabuin@...>
To: ascent4cat@yahoogroups.com
Sent: Monday, June 15, 2009 3:14:32 AM
Subject: Re: [2IIM CAT Prep] Quant Question

 

The answer is 8. Any number subtracted by the sum of its digits will be a multiple of 9.  The total of the remaining digits is 46 and hence the closest multiple of 9 greater than 46 is 54. So ,54-46 is 8.

From: rajendra sahu <r_s_124@yahoo. co.in>
To: ascent4cat@yahoogro ups.com
Sent: Sunday, May 17, 2009 1:04:27 PM
Subject: [2IIM CAT Prep] Quant Question

Hi,
 
Please give solution to the following prob--
 
A teacher wrote a 10 digit number on the board and asked her students to subtract the sum of digits of  the number from the
number. Raju performed the subtraction but accidently erased one of the digits in the result. The remaining digits were 1, 2, 3, 3, 6,
6, 8, 8, 9( not necessarily in that order) which digit did Raju erase?
 
1)    9        2)    8
3)    4        4)     Cannot be determined
 
Rajendra

Explore and discover exciting holidays and getaways with Yahoo! India Travel Click here!





--
SRIRAM|
SURAT | MOBILE :- 9909902378

Reply | Messages in this Topic (13)
#3616 From: raj beniwal <raj_bnwl@...>
Date: Thu Sep 17, 2009 12:12 pm
Subject: (No subject) 		raj_bnwl
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i think we get 1023 some of digits from adding the digits of numbers from 1 - 120 .
 
 as sum of digits from 1-9 is =45 it repeats 10 times so 450 for unit digits ok.
 now for the ten's digits 1 - 9 digits each repeats 10 times so sum is 450 here too.
 
hence total sum of digits upto 99 is 900.
 
now 100 sum of digits =1
now from 101 - 119 sum fo digits at unit place 90.
from 110 -119.
 
for ten's digit it is 10
and for hundred's digit it is
from 101 - 119th sum of digits is = 19
 
 
so total sum is 900+90+10+19+1=1020 so the digit 120 must be include
because it gives us correct sum 1023. right
 
now as to make pages maximum we can think that atleast one of digits is 9 so we have to take  next numbers 121, 122. but it does not make it the maximum because there is one more solution that is 123 whose some of digit is 6 so the missed out number can be 96 or 69.
 
 
plz give me ur explanation if i m wrong

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#3617 From: siddhesh surya <surya_siddhesh@...>
Date: Sat Sep 19, 2009 11:09 am
Subject: Re: [2IIM CAT Prep] time & distance 		surya_siddhesh
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1. Let the total distance be x km.
    x-(21x/50 + 4x/50)=2
    x/2 = 2
    x=4 km.

2. speed = distance/time
    s=420/t
    s+10 = 420/(t-1)
    substituting value of s in 2nd equation, we get quadratic equation in t.
    t=7
    Therefore, s=420/7=60km/hr 

--- On Sat, 19/9/09, Dhaval <mystudymail@...> wrote:

From: Dhaval <mystudymail@...>
Subject: [2IIM CAT Prep] time & distance
To: ascent4cat@yahoogroups.com
Date: Saturday, 19 September, 2009, 10:20 AM

 

Time & Distance problems...pls discuss the method.

1] A man performs 2/25 of his journey by bus, 21/50 by car    and the remaining 2 km on foot. find the total journey

2] A car covers 420 km with constant speed. if its speed were 10km/h more it would have taken 1 hr less to cover the distance. find the speed of the car.


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#3618 From: siddhesh surya <surya_siddhesh@...>
Date: Mon Sep 21, 2009 3:30 am
Subject: Re: [2IIM CAT Prep] Quant Question 		surya_siddhesh
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Dividing the series into partial fractions,
=1/3[1/5-1/8+1/8-1/11+...................+1/242-1/245]
=1/3[1/5-1/242]
=16/245

regards,
Siddhesh.

--- On Fri, 18/9/09, sri ram <sarkram@...> wrote:

From: sri ram <sarkram@...>
Subject: Re: [2IIM CAT Prep] Quant Question
To: ascent4cat@yahoogroups.com
Date: Friday, 18 September, 2009, 8:19 AM

 

Can anyone please help me out, what would be the answer for the below question(series)… ..

 

    1             1                  1                            1

-------  +   ---------     + ---------+. . . . . . . + ----------

(5)(8)      (8)(11)          (11)(14)                 (242)(245)

 

 

Regards,

Sriram Kothandaraman

On Tue, Aug 11, 2009 at 11:00 PM, Pooja Bhavsar <poojabh_238@ yahoo.com> wrote:
 

A: THE NO. WUD BE LIKE THIS 1233668898 (ANY ARRNGEMENT DOESN’T MATTER) BCOZ AS WE KNOW THAT IF U SUBTRACT THE SUM OF NO. FROM THE NO IT WILL BE DIVISIBLE BY 9. SO, ANS WUD BE  = OPTION(2)



From: n suresh <suresh_baabuin@ yahoo.com>
To: ascent4cat@yahoogro ups.com
Sent: Monday, June 15, 2009 3:14:32 AM
Subject: Re: [2IIM CAT Prep] Quant Question

 

The answer is 8. Any number subtracted by the sum of its digits will be a multiple of 9.  The total of the remaining digits is 46 and hence the closest multiple of 9 greater than 46 is 54. So ,54-46 is 8.

From: rajendra sahu <r_s_124@yahoo. co.in>
To: ascent4cat@yahoogro ups.com
Sent: Sunday, May 17, 2009 1:04:27 PM
Subject: [2IIM CAT Prep] Quant Question

Hi,
 
Please give solution to the following prob--
 
A teacher wrote a 10 digit number on the board and asked her students to subtract the sum of digits of  the number from the
number. Raju performed the subtraction but accidently erased one of the digits in the result. The remaining digits were 1, 2, 3, 3, 6,
6, 8, 8, 9( not necessarily in that order) which digit did Raju erase?
 
1)    9        2)    8
3)    4        4)     Cannot be determined
 
Rajendra

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#3619 From: Rahul Jain <championishere007@...>
Date: Sat Sep 19, 2009 12:05 pm
Subject: Re: [2IIM CAT Prep] Quant Question 		championishe...
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It is of the format:

(1/3) [ {(1/5 - 1/8)} + {(1/8) - (1/11)} + ....... + {(1/242) - (1/245)}]

= 1/3 * [1/5 - 1/245]

= 1/3 * [(240)/(5*245)]

= 16/245 ---> Ans.




On Fri, Sep 18, 2009 at 8:19 AM, sri ram <sarkram@...> wrote:
 

Can anyone please help me out, what would be the answer for the below question(series)…..

 

    1             1                  1                            1

-------  +   ---------     + ---------+. . . . . . . + ----------

(5)(8)      (8)(11)          (11)(14)                 (242)(245)

 

 

Regards,

Sriram Kothandaraman

On Tue, Aug 11, 2009 at 11:00 PM, Pooja Bhavsar <poojabh_238@...> wrote:
 

A: THE NO. WUD BE LIKE THIS 1233668898 (ANY ARRNGEMENT DOESN’T MATTER) BCOZ AS WE KNOW THAT IF U SUBTRACT THE SUM OF NO. FROM THE NO IT WILL BE DIVISIBLE BY 9. SO, ANS WUD BE  = OPTION(2)



From: n suresh <suresh_baabuin@...>
To: ascent4cat@yahoogroups.com
Sent: Monday, June 15, 2009 3:14:32 AM
Subject: Re: [2IIM CAT Prep] Quant Question

 

The answer is 8. Any number subtracted by the sum of its digits will be a multiple of 9.  The total of the remaining digits is 46 and hence the closest multiple of 9 greater than 46 is 54. So ,54-46 is 8.

From: rajendra sahu <r_s_124@yahoo. co.in>
To: ascent4cat@yahoogro ups.com
Sent: Sunday, May 17, 2009 1:04:27 PM
Subject: [2IIM CAT Prep] Quant Question

Hi,
 
Please give solution to the following prob--
 
A teacher wrote a 10 digit number on the board and asked her students to subtract the sum of digits of  the number from the
number. Raju performed the subtraction but accidently erased one of the digits in the result. The remaining digits were 1, 2, 3, 3, 6,
6, 8, 8, 9( not necessarily in that order) which digit did Raju erase?
 
1)    9        2)    8
3)    4        4)     Cannot be determined
 
Rajendra

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rahul_jain@...
Ph.no.: 9328067371




Reply | Messages in this Topic (13)
#3620 From: "atul_ramanujam" <atul_ramanujam@...>
Date: Sat Sep 19, 2009 7:45 am
Subject: Re: time & distance 		atul_ramanujam
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--- In ascent4cat@yahoogroups.com, Dhaval <mystudymail@...> wrote:
>
> Time & Distance problems...pls discuss the method.
>
> 1] A man performs 2/25 of his journey by bus, 21/50 by car    and the
> remaining 2 km on foot. find the total journey
>
> 2] A car covers 420 km with constant speed. if its speed were 10km/h more it
> would have taken 1 hr less to cover the distance. find the speed of the car.
>


2] As we know tht for a constant distance speed is inversely proportional to
time, hence for the ques
s/(s+10) = (t-1)/t
where s and t are original speed and time resp.
also s*t=420
on solving both equation we get s=60 kmph and t=7 hrs


Alternative method..
Two equations are..
s*t = 420           .....(1)
(s+10)*(t-1) = 420   ....(2)
Taking factors of 420
420 = 1*420
     = 2*210
     = 3*140
     = 4*105
     = 5*84
     = 6*70
     = 7*60
.
.
.
.
On seeing the last two factors and the equations we can easily tell the answer.
i.e speed = 60kmph and time = 7hrs


Please kindly let me know if there is any other method.

Reply | Messages in this Topic (7)
#3621 From: "atul_ramanujam" <atul_ramanujam@...>
Date: Sat Sep 19, 2009 7:11 am
Subject: Re: time & distance 		atul_ramanujam
Send Email Send Email
  
--- In ascent4cat@yahoogroups.com, Dhaval <mystudymail@...> wrote:
>
> Time & Distance problems...pls discuss the method.
>
> 1] A man performs 2/25 of his journey by bus, 21/50 by car    and the
> remaining 2 km on foot. find the total journey
>
> 2] A car covers 420 km with constant speed. if its speed were 10km/h more it
> would have taken 1 hr less to cover the distance. find the speed of the car.
>




1] Total journey travelled by bus and car= 2/25 + 21/50 = 25/50 = 1/2
This implies tht half of the journey was travelled by car and bus.
The remaining half is given = 2km
Hence total jorney = 2+2 = 2kms (Ans.)

Reply | Messages in this Topic (7)
#3622 From: Rahil Sahu <rahilsahu@...>
Date: Sat Sep 19, 2009 6:25 am
Subject: Re: [2IIM CAT Prep] time & distance 		rahilsahu
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 This is simple school mathematics in the fractions chapter

1. add the fractions - 25/50 covered by bus & car.
    So remaining 25/50 or 1/2 (2km) was covered by foot. hence journey is 2km * 2/1 = 4km

2. let the speed be x km/hr..
    420/x = 420/(x+10) + 1
=> 420(x+10) = 420x + x(x+10)
=> x^2 + 10x - 4200 = 0

Solve for x. Ans = 60km/hr

From: Dhaval <mystudymail@...>
To: ascent4cat@yahoogroups.com
Sent: Saturday, 19 September, 2009 10:20:29 AM
Subject: [2IIM CAT Prep] time & distance

 

Time & Distance problems...pls discuss the method.

1] A man performs 2/25 of his journey by bus, 21/50 by car    and the remaining 2 km on foot. find the total journey

2] A car covers 420 km with constant speed. if its speed were 10km/h more it would have taken 1 hr less to cover the distance. find the speed of the car.


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#3623 From: vivek vicky <malsam_v2@...>
Date: Tue Sep 22, 2009 6:04 am
Subject: Re: [2IIM CAT Prep] Quant Question 		malsam_v2
Send Email Send Email
 
@siddhesh
Can you jus explain hw tat 1/3 comes.. u mean by splittin 1/2.8 into partial ftracctrion ? m not gettin tat properly yar....

--- On Mon, 21/9/09, siddhesh surya <surya_siddhesh@...> wrote:

From: siddhesh surya <surya_siddhesh@...>
Subject: Re: [2IIM CAT Prep] Quant Question
To: ascent4cat@yahoogroups.com
Date: Monday, 21 September, 2009, 9:00 AM

 

Dividing the series into partial fractions,
=1/3[1/5-1/8+ 1/8-1/11+ ......... ......... .+1/242-1/ 245]
=1/3[1/5-1/242]
=16/245

regards,
Siddhesh.

--- On Fri, 18/9/09, sri ram <sarkram@gmail. com> wrote:

From: sri ram <sarkram@gmail. com>
Subject: Re: [2IIM CAT Prep] Quant Question
To: ascent4cat@yahoogro ups.com
Date: Friday, 18 September, 2009, 8:19 AM

 

Can anyone please help me out, what would be the answer for the below question(series)… ..

 

    1             1                  1                            1

-------  +   ---------     + ---------+. . . . . . . + ----------

(5)(8)      (8)(11)          (11)(14)                 (242)(245)

 

 

Regards,

Sriram Kothandaraman

On Tue, Aug 11, 2009 at 11:00 PM, Pooja Bhavsar <poojabh_238@ yahoo.com> wrote:
 

A: THE NO. WUD BE LIKE THIS 1233668898 (ANY ARRNGEMENT DOESN’T MATTER) BCOZ AS WE KNOW THAT IF U SUBTRACT THE SUM OF NO. FROM THE NO IT WILL BE DIVISIBLE BY 9. SO, ANS WUD BE  = OPTION(2)



From: n suresh <suresh_baabuin@ yahoo.com>
To: ascent4cat@yahoogro ups.com
Sent: Monday, June 15, 2009 3:14:32 AM
Subject: Re: [2IIM CAT Prep] Quant Question

 

The answer is 8. Any number subtracted by the sum of its digits will be a multiple of 9.  The total of the remaining digits is 46 and hence the closest multiple of 9 greater than 46 is 54. So ,54-46 is 8.

From: rajendra sahu <r_s_124@yahoo. co.in>
To: ascent4cat@yahoogro ups.com
Sent: Sunday, May 17, 2009 1:04:27 PM
Subject: [2IIM CAT Prep] Quant Question

Hi,
 
Please give solution to the following prob--
 
A teacher wrote a 10 digit number on the board and asked her students to subtract the sum of digits of  the number from the
number. Raju performed the subtraction but accidently erased one of the digits in the result. The remaining digits were 1, 2, 3, 3, 6,
6, 8, 8, 9( not necessarily in that order) which digit did Raju erase?
 
1)    9        2)    8
3)    4        4)     Cannot be determined
 
Rajendra

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--
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SURAT | MOBILE :- 9909902378

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