| | Notices | Welcome to the PaGaLGuY.com MBA forums. You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today! If you have any problems with the registration process or your account login, please contact us at info [at] pagalguy.com
Check out the PaGaLGuY.com Bschool Rankings 2009 on TV. UTVi will be broadcasting a show on the PG Bschool Rankings and it will be rerun on the following times. Take a look and send us feedback :)
Reruns: Saturday, November 22 2008 at 3:30pm and 6 pm
Reruns: Sunday, November 23 2008 at 12:00 noon and 5pm
Rerun: Thursday, November 27 2008 at 5.30 pm
| 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 ! | | | |
has no status.
Expert PaGaL
Status: Offline Posts: 100 Thanks: 49
Thanked 6 Times in 6 Posts
Join Date: Aug 2007 Location: Andhra | Re: official quant thread for cat08 -
09-03-2008, 07:51 PM
Hi friends....Plzz Help me to solve this problem....
A school is going to have 1000 students in near future.
1/4th use scooter, 1/5th use bikes and 1/9th use cycle. Find the number of students at present.
Whatever you do will be insignificant, but its very important that you do it -Gandhiji  | | |  | | | | |
is Bak
Certified PaGaL
Status: Offline Posts: 2,227 Thanks: 2,051
Thanked 2,146 Times in 851 Posts
Join Date: Jan 2008 Location: Kanpur | Re: official quant thread for cat08 -
09-03-2008, 08:04 PM
Quote:
Originally Posted by Hi2All  Hi friends....Plzz Help me to solve this problem....
A school is going to have 1000 students in near future.
1/4th use scooter, 1/5th use bikes and 1/9th use cycle. Find the number of students at present.
| clealry the lcm of 4,5,9 is 180
now as teh no is close to 1000
we find the closest is 900, assuming the no of students increase
hence the no of students is 900 | | | | | | | |
has no status.
Trainee PaGaL
Status: Offline Posts: 49 Thanks: 30
Thanked 82 Times in 16 Posts
Join Date: Dec 2007 Location: neverland | Re: official quant thread for cat08 -
10-03-2008, 06:25 AM
Quote:
Originally Posted by implex clealry the lcm of 4,5,9 is 180
now as teh no is close to 1000
we find the closest is 900, assuming the no of students increase
hence the no of students is 900 | hi
i did not get ur logic......plz explain in detail cogito,ergo,sum................
| | | | | | | |
dead but kicking
Hardcore PaGaL
Status: Offline Posts: 297 Thanks: 334
Thanked 159 Times in 61 Posts
Join Date: Feb 2007 Location: Bangalore | Re: official quant thread for cat08 -
10-03-2008, 02:30 PM
Quote:
Originally Posted by convivial hi
i did not get ur logic......plz explain in detail
cogito,ergo,sum................
| Actually the question is really vague but with all the assumptions made by implex the number of students should be perfectly divisible by 4,5,9 .The LCM of 4,5,9 is 180 , The number of students can be a multiple of 180 .... ( as the number of students cannot be a fraction , 1/2 a student  ) | | | | | | | |
is Bak
Certified PaGaL
Status: Offline Posts: 2,227 Thanks: 2,051
Thanked 2,146 Times in 851 Posts
Join Date: Jan 2008 Location: Kanpur | Re: official quant thread for cat08 -
10-03-2008, 03:59 PM
Quote:
Originally Posted by convivial hi
i did not get ur logic......plz explain in detail
cogito,ergo,sum................
| its simple
as no of students cant be a fraction.
it should be divisble by 4,5 and 9
now lcm is 180
so we take it near to 1000 .. that is 900 | | | | | | | |
14th dec
Hardcore PaGaL
Status: Offline Posts: 498 Thanks: 163
Thanked 241 Times in 131 Posts
Join Date: Dec 2007 Location: kolkata | Re: official quant thread for cat08 -
12-03-2008, 08:47 PM
a function y=f(n) is defined, for all natural numbers, as the sum of the digits of n.
1. if k is a natural number such that f(f(f(f(k))))=1 and k>f(f(k)).f(f(f(k)))>1 what is the least number of digits that k can have?
2. for a natural number m, which of the following could be the value of f(f(m-f(m)))?
a.12 b.15 c.18 d.21
plz post ur solutions along with the answers | | | | | | | |
has no status.
Expert PaGaL
Status: Offline Posts: 143 Thanks: 1,632
Thanked 147 Times in 51 Posts
Join Date: Apr 2007 Location: timBUCKtoo | Re: official quant thread for cat08 -
12-03-2008, 09:15 PM
Quote:
Originally Posted by vicky113 a function y=f(n) is defined, for all natural numbers, as the sum of the digits of n.
1. if k is a natural number such that f(f(f(f(k))))=1 and k>f(f(k)).f(f(f(k)))>1 what is the least number of digits that k can have?
2. for a natural number m, which of the following could be the value of f(f(m-f(m)))?
a.12 b.15 c.18 d.21
plz post ur solutions along with the answers | least no. of digits that k can have = 23 ....... temme if i m correct so tht i cn explain the procedure
CAT IN THE UNDERTOW!!
JUST......CAT IN THE UNDERTOW!!
Last edited by SUPER XERO; 12-03-2008 at 09:22 PM..
| | | | | | | |
happy with no status
Hardcore PaGaL
Status: Offline Posts: 347 Thanks: 69
Thanked 155 Times in 92 Posts
Join Date: Dec 2007 Location: Mumbai Age: 22 | Re: official quant thread for cat08 -
12-03-2008, 09:20 PM
Quote:
Originally Posted by vicky113 a function y=f(n) is defined, for all natural numbers, as the sum of the digits of n.
1. if k is a natural number such that f(f(f(f(k))))=1 and k>f(f(k)).f(f(f(k)))>1 what is the least number of digits that k can have?
2. for a natural number m, which of the following could be the value of f(f(m-f(m)))?
a.12 b.15 c.18 d.21
plz post ur solutions along with the answers | answers:
1) since f(f(k)).f(f(f(k)))>1
f(f(k)) has to be atleast > 10
so k has to be at least a 3 digit number
2) let k=1000a+100b+10c+d
so (m-f(m) = 999a+99b+9c
so f(f(m-f(m)))%9 = 0
the only option that satisfies this is 'c'
answer is 18...
Krishna to the greatest hero Arjuna:
tyaktvottistha parantapa
Arise O scorcher of enemies!!!
| | | | | The Following 2 Users Say Thank You to nbangalorekar For This Useful Post: | | | | | |
hmmm.....
Trainee PaGaL
Status: Offline Posts: 76 Thanks: 7
Thanked 12 Times in 10 Posts
Join Date: Jul 2007 Location: Bangalore |  Re: official quant thread for cat08 -
12-03-2008, 09:22 PM
hey IOTA
PLZ POST THE SOLN FOR THAT VINAY AND MINI QUIZ MASTER QUESTION.  | | | | | | | |
has no status.
Expert PaGaL
Status: Offline Posts: 143 Thanks: 1,632
Thanked 147 Times in 51 Posts
Join Date: Apr 2007 Location: timBUCKtoo | Re: official quant thread for cat08 -
12-03-2008, 09:24 PM
Quote:
Originally Posted by nbangalorekar answers:
1) since f(f(k)).f(f(f(k)))>1
f(f(k)) has to be atleast > 10
so k has to be at least a 3 digit number
2) let k=1000a+100b+10c+d
so (m-f(m) = 999a+99b+9c
so f(f(m-f(m)))%9 = 0
the only option that satisfies this is 'c'
answer is 18... | dude........ agree with ur second answer......
but in the first one it shud be a 2 digit number.........
CAT IN THE UNDERTOW!!
JUST......CAT IN THE UNDERTOW!!
| | | | | Thread Tools | | | | Display Modes |  Linear Mode | 
Posting Rules
| You may not post new threads You may not post replies You may not post attachments You may not edit your posts
HTML code is Off | | | |
| |
