The Official CAT 2007 Quant Thread - Page 501 - PaGaLGuY.com - The Everything of MBA in India and Abroad, CAT 2009, GMAT, XAT, MAT
PaGaLGuY.com - The Everything of MBA in India and Abroad, CAT 2009, GMAT, XAT, MAT
Forum Rules
» Sponsors
  PaGaLGuY.com - The Everything of MBA in India and Abroad, CAT 2009, GMAT, XAT, MAT > Exam Resources > Quantitative Questions and Answers
The Official CAT 2007 Quant Thread
Quantitative Questions and Answers Discuss Quantitative and other Math related questions. Post your math doubts and get it solved by the smartest brains this side of the universe !

Tags: , , , ,

» Thread Closed
 
LinkBack Thread Tools Display Modes
  (#5001)
mr.s.k.abhi mr.s.k.abhi is offline
DayZero-Saint Gobain ;)
Hardcore PaGaL
NMIMS Mumbai

 
mr.s.k.abhi's Avatar
 
Posts: 695
Join Date: Aug 2006
Location: MUMBAI
Groans: 46
Groaned at 56 Times in 32 Posts
Thanks: 373
Thanked 315 Times in 133 Posts
Re: The Official CAT 2007 Quant Thread - 12-11-2007, 10:47 PM

Blacof bhai..i too do it the way Guarishankar has done it..

yes (n-1) should be a multiple of 17 coz here we are dealing with integers and hence the average should be an integer...but since the reduced avg is a fraction...so n-1 should be such that the sum of n-1 terms should be an integer...avg*no. of terms.... hence n-1 should be a multiple of 17....

hope u get it...


There's no escaping reason, no denying purpose - because as we both know, without purpose, we would not exist.
It is purpose that created us, Purpose that guides us, That drives us, It is purpose that defines us, Purpose that binds us.
Smith (ex-agent-Matrix-II)
Digg this Post!Add Post to del.icio.usStumble this Post!
Sponsored Links
  (#5002)
mr.s.k.abhi mr.s.k.abhi is offline
DayZero-Saint Gobain ;)
Hardcore PaGaL
NMIMS Mumbai

 
mr.s.k.abhi's Avatar
 
Posts: 695
Join Date: Aug 2006
Location: MUMBAI
Groans: 46
Groaned at 56 Times in 32 Posts
Thanks: 373
Thanked 315 Times in 133 Posts
Re: The Official CAT 2007 Quant Thread - 12-11-2007, 10:56 PM

Quote:
Originally Posted by blacof View Post
assumes initially there were k +1 numbers then original sum is
(K+1)(k+2) /2 - x = K ( 602/17)

k^2 + 3k + 2 /2 - K ( 602/17) = x therefore

we get 34 ( x-1 ) = K ( 17k-1153)

this solves for k = 68 => x =7

@ Gauri I dint get the fact that n-1 should be a multiple of 17
blacof bhai hw did u sole the final equation u got in your solution..can u please elucidate...


There's no escaping reason, no denying purpose - because as we both know, without purpose, we would not exist.
It is purpose that created us, Purpose that guides us, That drives us, It is purpose that defines us, Purpose that binds us.
Smith (ex-agent-Matrix-II)
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5003)
Manoj M R Manoj M R is offline
has no status.
Newbie PaGaL
 
Posts: 28
Join Date: Jul 2007
Location: Cochin
Age: 24
Groans: 0
Groaned at 1 Time in 1 Post
Thanks: 20
Thanked 9 Times in 7 Posts
Re: The Official CAT 2007 Quant Thread - 13-11-2007, 05:30 PM

Quote:
Originally Posted by gaurishankar View Post
0.wxyz.........=wxyz/9999=wxyz/3*3*11*101
now DED can be either 101, 303 or 909
but since the no. is less than 1 hence it should be 909
also numerator should be divisible by 11 to make denominator 9999
check for 11^2=121 , 242,363 ,484
we get numerator 484
hence 484/909

Hi gaurishankar....

Can you please explain the bold parts still more clearly....
i dint get the concept behind it....

Thanks in advance...
Digg this Post!Add Post to del.icio.usStumble this Post!
The Following User Says NO Thank You to Manoj M R For This Un-useful Post:
dipen1 (13-11-2007)
  (#5004)
milind20 milind20 is offline
has no status.
Trainee PaGaL
 
milind20's Avatar
 
Posts: 53
Join Date: Aug 2005
Location: Mumbai
Age: 23
Groans: 0
Groaned at 0 Times in 0 Posts
Thanks: 13
Thanked 9 Times in 4 Posts
Re: The Official CAT 2007 Quant Thread - 13-11-2007, 10:04 PM

Can anyone help me out with this Ratio & Proportion problem -

A diamond falls down and breaks into three pieces whose weights are in the ratio 2:3:5. The value of the diamond is directly proportional to the cube of its weight. If the original diamond is worth Rs 343,000, what is the loss in the value due to the breakage?

1) Rs 212,660
2) Rs 309,043
3) Rs 275,429
4) Rs 288,120
5) Rs 224,000


--------------------------------------------------------------
*Forgive, O Lord, my little jokes on Thee,
And I'll forgive Thy great big one on me*
--------------------------------------------------------------
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5005)
sharang sharang is offline
lovin' life
Hardcore PaGaL
 
sharang's Avatar
 
Posts: 418
Join Date: May 2007
Location: New Delhi
Groans: 0
Groaned at 14 Times in 7 Posts
Thanks: 128
Thanked 262 Times in 124 Posts
Re: The Official CAT 2007 Quant Thread - 13-11-2007, 10:10 PM

Quote:
Originally Posted by milind20 View Post
Can anyone help me out with this Ratio & Proportion problem -

A diamond falls down and breaks into three pieces whose weights are in the ratio 2:3:5. The value of the diamond is directly proportional to the cube of its weight. If the original diamond is worth Rs 343,000, what is the loss in the value due to the breakage?

1) Rs 212,660
2) Rs 309,043
3) Rs 275,429
4) Rs 288,120
5) Rs 224,000
ans is option 4?


IF IT IS TO BE, IT IS UP TO ME !
Admissions Committee 2009
Industry Interaction Committee 2008-10
DMS, IIT Delhi Class of 2010
The DMS Blog
DMS Admissions Video
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5006)
sharang sharang is offline
lovin' life
Hardcore PaGaL
 
sharang's Avatar
 
Posts: 418
Join Date: May 2007
Location: New Delhi
Groans: 0
Groaned at 14 Times in 7 Posts
Thanks: 128
Thanked 262 Times in 124 Posts
Re: The Official CAT 2007 Quant Thread - 13-11-2007, 10:15 PM

Quote:
Originally Posted by milind20 View Post
Can anyone help me out with this Ratio & Proportion problem -

A diamond falls down and breaks into three pieces whose weights are in the ratio 2:3:5. The value of the diamond is directly proportional to the cube of its weight. If the original diamond is worth Rs 343,000, what is the loss in the value due to the breakage?

1) Rs 212,660
2) Rs 309,043
3) Rs 275,429
4) Rs 288,120
5) Rs 224,000
Value=k*w^3
let wt be 10 gms
k=343000/1000=343
New value =343(2^3+3^3+5^3)=343*160
loss in value=343000-343*160=288120


IF IT IS TO BE, IT IS UP TO ME !
Admissions Committee 2009
Industry Interaction Committee 2008-10
DMS, IIT Delhi Class of 2010
The DMS Blog
DMS Admissions Video
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5007)
milind20 milind20 is offline
has no status.
Trainee PaGaL
 
milind20's Avatar
 
Posts: 53
Join Date: Aug 2005
Location: Mumbai
Age: 23
Groans: 0
Groaned at 0 Times in 0 Posts
Thanks: 13
Thanked 9 Times in 4 Posts
Re: The Official CAT 2007 Quant Thread - 13-11-2007, 10:41 PM

Quote:
Originally Posted by sharang View Post
Value=k*w^3
let wt be 10 gms
k=343000/1000=343
New value =343(2^3+3^3+5^3)=343*160
loss in value=343000-343*160=288120
yaa.. the correct answer is 4... Thanks...


--------------------------------------------------------------
*Forgive, O Lord, my little jokes on Thee,
And I'll forgive Thy great big one on me*
--------------------------------------------------------------
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5008)
parikhdhruv parikhdhruv is offline
has no status.
Trainee PaGaL
NMIMS Mumbai

 
Posts: 81
Join Date: Jan 2006
Location: MUMBAI
Age: 24
Groans: 6
Groaned at 10 Times in 4 Posts
Thanks: 14
Thanked 38 Times in 15 Posts
Re: The Official CAT 2007 Quant Thread - 14-11-2007, 01:41 AM

Hey Puys...!!
Can sum1 crack this one....
The remainder when 10^10+10^100+10^100.......+10^10000000000 is divided by 7....

Best...!!!
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5009)
parikhdhruv parikhdhruv is offline
has no status.
Trainee PaGaL
NMIMS Mumbai

 
Posts: 81
Join Date: Jan 2006
Location: MUMBAI
Age: 24
Groans: 6
Groaned at 10 Times in 4 Posts
Thanks: 14
Thanked 38 Times in 15 Posts
Re: The Official CAT 2007 Quant Thread - 14-11-2007, 02:01 AM

Please help on this one as well....

Remainder when 32^32^32 divided by 7
Digg this Post!Add Post to del.icio.usStumble this Post!
  (#5010)
Manoj M R Manoj M R is offline
has no status.
Newbie PaGaL
 
Posts: 28
Join Date: Jul 2007
Location: Cochin
Age: 24
Groans: 0
Groaned at 1 Time in 1 Post
Thanks: 20
Thanked 9 Times in 7 Posts
Re: The Official CAT 2007 Quant Thread - 14-11-2007, 08:56 AM

Quote:
Originally Posted by parikhdhruv View Post
Please help on this one as well....

Remainder when 32^32^32 divided by 7

Remainder theorem concept
(32^32^32) / 7
(4^32^32) / 7
((4^3)^10*4^2)^32 / 7
16^32/7
2^32/7
(2^6)^5*2^2/7
64*2^2/7
1*4/7

4....remainder

Last edited by Manoj M R; 14-11-2007 at 10:12 AM.
Digg this Post!Add Post to del.icio.usStumble this Post!
» Thread Closed

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off

Forum Jump

» Sponsors

PaGaLGuY.com is not responsible for the views and opinions of the posters.
PaGaLGuY.com is an Inzane Labs Private Limited production.