Search found 74 matches
- by garuhape
Sat Mar 26, 2011 8:49 am- Forum: Problem Solving
- Topic: # Properties
- Replies: 4
- Views: 1064
# Properties
Hey guys, this one really is difficult. I've no clue how to solve it! Can someone help me please!!! For every positive integer n, the function h(n) is defined to be the product of all the even integers from 2 to n inclusive. If p is the smallest prime factor of h(100) + 1, then p is? a) between 2 an...
- by garuhape
Sat Mar 26, 2011 8:21 am- Forum: Problem Solving
- Topic: # Properties
- Replies: 4
- Views: 1064
Hi there, Is positive integer n – 1 a multiple of 3? (1) n^3 – n is a multiple of 3 (2) n^3 + 2n^2+ n is a multiple of 3 Statement 1: n^3 - n is a multiple of 3. n^3 - n = n(n^2 - 1) = n(n+1)(n-1) The above expression represents 3 consecutive integers: n-1, n, n+1. Among every 3 consecutive int...
- by garuhape
Sat Mar 26, 2011 6:55 am- Forum: Data Sufficiency
- Topic: Help Plz
- Replies: 3
- Views: 1255
Help Plz
Hi there,
Is positive integer n – 1 a multiple of 3?
(1) n^3 – n is a multiple of 3
(2) n^3 + 2n^2+ n is a multiple of 3
- by garuhape
Sat Mar 26, 2011 2:32 am- Forum: Data Sufficiency
- Topic: Help Plz
- Replies: 3
- Views: 1255
8 member plays golf and tennis of these 8 member 5 were those which play all the three sports so we have to subtract these 5 persons from 8 to find those member which only play tennis and golf. make a venn diagram, and you'll realize your mistake. I understand it now. It's because the 5 people are ...
- by garuhape
Wed Mar 23, 2011 7:25 am- Forum: Problem Solving
- Topic: Set problem again
- Replies: 7
- Views: 2170
Why? In the text it says that 8 members play golf and tennis and not that at least 8 members play golf and tennis.manpsingh87 wrote:and no. of people playing tennis and golf alone would be 3;
- by garuhape
Wed Mar 23, 2011 4:22 am- Forum: Problem Solving
- Topic: Set problem again
- Replies: 7
- Views: 2170
Set problem again
At alpha athletics club the members are required to play at least one sport besides their normal fitness training. In fact 33 members play tennis, 43 members play squash, and 42 members play golf. 16 members play at least tennis and squash, 18 members play at least squash and golf and 8 members play...
- by garuhape
Wed Mar 23, 2011 3:03 am- Forum: Problem Solving
- Topic: Set problem again
- Replies: 7
- Views: 2170
Work Problem
The ratio of the rates of Bob, John and Craig is 1 to 2 to 5 respectively, if the three work together on the project it takes 4 hours to complete. How long does it take John to do the job alone?
Can someone explain please why the OA is 16 and noch 32!
Thx
- by garuhape
Mon Mar 21, 2011 4:35 am- Forum: Problem Solving
- Topic: Work Problem
- Replies: 3
- Views: 1957
TOEFL® iBT Sampler
Hi there,
I just did the TOEFL IBT Sampler and scored 11/13 on the RC and 9/11 out of the LC.
Does someone have a clue how many points this more or less is when you gross it up.
Thanks!
- by garuhape
Thu Mar 17, 2011 6:10 am- Forum: English Language Tests
- Topic: TOEFL® iBT Sampler
- Replies: 1
- Views: 4013
Need help on how to solve it quickly
Hey there, I'm not sure how to solve this one quickly:
How many numbers between 200 and 3600 inclusive are divisible by 4, 5 and 6?
We search for numbers which are not divisible by 2,3,4,5. So how can we quickly figure out which numbers are either prime numbers or dividable by 7?
Thx
- by garuhape
Wed Mar 16, 2011 3:41 pm- Forum: Problem Solving
- Topic: Need help on how to solve it quickly
- Replies: 5
- Views: 1314
Rate Problem
Hi there, can someone help me please? Bag A contains red, white and blue marbles such that the red to white marble ratio is 1:3 and the white to blue marble ratio is 2:3. Bag B contains red and white marbles in the ratio of 1:4. Together, the two bags contain 30 white marbles. How many red marbles c...
- by garuhape
Wed Mar 16, 2011 8:10 am- Forum: Problem Solving
- Topic: Rate Problem
- Replies: 2
- Views: 1005
Of Course, you can. Modifiers can either be placed in front or behind the noun!
The Club, following its hugely successful campaign, bought a number of new players.
- by garuhape
Wed Mar 16, 2011 7:15 am- Forum: Sentence Correction
- Topic: Pronoun in a clause before modifying its noun
- Replies: 1
- Views: 944
- by garuhape
Wed Mar 16, 2011 6:39 am- Forum: Problem Solving
- Topic: Probability Prob
- Replies: 6
- Views: 1632
Hi Garuhape this is how i did Probability = required cases/total cases total cases = 25 required cases: if we choose 21 from A we can choose only 24 from B. -----1 22 from A . 24 and 26 (From B) ---------2 23 from A 24 only (from B)-------------1 25 from A 24 only (from B)-----------1 24 from A all...
- by garuhape
Wed Mar 16, 2011 6:10 am- Forum: Problem Solving
- Topic: Probability Prob
- Replies: 6
- Views: 1632
Probability Prob
If any number from set A is multiplied by any number from set B, what is the probability that the product is a multiple of 4? A = {21, 22, 23, 24, 25} B = {23, 24, 25, 26, 27} The OA is 40%. However mine is 36% because I only get 9 combination which are dividable by 4 and not 10! Can someone help pl...
- by garuhape
Wed Mar 16, 2011 5:04 am- Forum: Problem Solving
- Topic: Probability Prob
- Replies: 6
- Views: 1632