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I may have missed something, but where does it say that p and q are integers. What if q is 1/5 and t is 1/25, assuming p^2 as 5^2, So in this case the answer would be that we do not know if q is greater than or less than t. In that case statement 1 is not sufficient. How does it matter whether p an...
- by ajith
Mon Sep 22, 2014 11:25 am- Forum: Data Sufficiency
- Topic: Cutie
- Replies: 9
- Views: 3215
"A company employs 7 men and 8 women. How many different three-person committees could be formed which do not consist entirely of men or entirely of women?" Just curious.....the solution to above problem should be - 15C3 - 7C3 - 8C3 Can someone please confirm? Answer to that problem is 15...
- by ajith
Thu Aug 25, 2011 10:12 am- Forum: Problem Solving
- Topic: how many unique triangles?
- Replies: 11
- Views: 6106
If you want the volume the formula is 1/3. Pi. r^2. hFractal wrote:do you have to know the formula for a right circular cone?
thx
SA = pi. r^2 + pi.r.l
r = radius, h = height , l = length
- by ajith
Mon Aug 08, 2011 1:10 pm- Forum: Problem Solving
- Topic: right circular cone
- Replies: 2
- Views: 1551
Can someone please explain the above. What ratio is he talking about? Consider 2 cases, Gross income was 100 and Net Deductions were 10 (Gross income to Deduction ratio =10) Gross income was 200 and deductions were 10 ((Gross income to Deduction ratio = 20) The net income increase in both cases are...
- by ajith
Mon Aug 08, 2011 1:05 pm- Forum: Data Sufficiency
- Topic: Guy's net income
- Replies: 10
- Views: 5834
Please help on this one The sum of the first 50 positive even integers is 2550. what is the sum of the even integers from 102 to 200 inclusive? A. 5100 B. 7550 C. 10100 D. 15500 E. 20100 total terms=(200-102+1)/2=50 sum=50/2[102+200]=7550 when i divide (200-102 + 1) /2 i get 49.5! It should have be...
- by ajith
Mon May 30, 2011 12:59 pm- Forum: Problem Solving
- Topic: The sum of the first 50 positive even integers is 2550. what
- Replies: 9
- Views: 16849
There is a platter with 5 bowls on the platter. 1 bowl is blue and the other 4 bowls are white. The are 5 available snacks, raisins, peanuts, and 3 other snacks. Raisins or peanuts can only go in the blue bowl, and the other snacks must go in the white bowls (of course, if raisins are in the blue b...
- by ajith
Sat Feb 05, 2011 8:32 am- Forum: Problem Solving
- Topic: a ps from gmat club
- Replies: 2
- Views: 1054
Two women start walking toward each other from two ends of a bridge at the same time. They both leave at dawn. When they meet, it is 12pm. When the first woman reaches the other end of the bridge, it is 4pm. When the second woman reaches the other end of the bridge, it is 9pm. They both walk at con...
- by ajith
Sat Feb 05, 2011 8:21 am- Forum: GMAT Math
- Topic: Tough question, need help!
- Replies: 3
- Views: 2008
S2 - 500 units cost 45K less than 1000, therfefore can I assume 500 units cost 45K to manufacture? Based on this 45000 = 500K + T.. That is where it goes wrong the equation 45000 = 500K + T is wrong Instead it should have been 45000 = 500K manufacturer M's cost of producing 500 units in a month is ...
- by ajith
Sat May 15, 2010 5:32 am- Forum: Data Sufficiency
- Topic: collection of tough problems from G PREP - 24
- Replies: 9
- Views: 4677
Plz check the link below http://www.beatthegmat.com/percentile-t31897.html#139703 HTH! I totally disagree with the explanation in that link even though I agree with the answer Angela is at 90th percentile means there are 72 students (90/100*80) below Angela! or there are 7 above Angela In the other...
- by ajith
Fri May 14, 2010 8:08 pm- Forum: Problem Solving
- Topic: How to calculate the Percentile
- Replies: 9
- Views: 3986
- by ajith
Fri May 14, 2010 3:51 am- Forum: Problem Solving
- Topic: How to calculate the Percentile
- Replies: 9
- Views: 3986
May I know the source of the question.ashforgmat wrote:Now i am confused as to which is the correct explanation....
if you are at 90th percentile on some parameter means 90% of the group is below you on that parameter.
So in a class of 80 if you are at 90th percentile - 90% i.e. 72 students are below you.
- by ajith
Fri May 14, 2010 3:50 am- Forum: Problem Solving
- Topic: How to calculate the Percentile
- Replies: 9
- Views: 3986
how many points of intersection does Y = (X-1) (X +1) (X-3) have with x axis? Equation of x axis is y=0 so to find the points of intersection, we have to solve y= (X-1) (X +1) (X-3) =0 => (X-1) (X +1) (X-3) =0 x=1, x= -1 and x=3 are the solutions so there are 3 such points where the curve intersect...
- by ajith
Thu May 13, 2010 11:46 pm- Forum: Problem Solving
- Topic: 189) how mnay points of intersection
- Replies: 1
- Views: 849
154) Angela’s grade was in the 90th percentile out of 80 grades in her class. In another class there were 19 grades higher than Angela’s. If nobody had Angela’s grade, then Angela was what percentile of the two classes combined? a. 72 b. 80 c. 81 d. 85 e. 92 please can some help with the expl...
- by ajith
Thu May 13, 2010 11:43 pm- Forum: Problem Solving
- Topic: How to calculate the Percentile
- Replies: 9
- Views: 3986
it takes 7 monkey minutes to eat 1 bananassanju09 wrote:Suppose 7 monkeys take 7 minutes to eat 7 bananas. How many monkeys would it take to eat 70 bananas in 70 minutes?
(A) 70
(B) 49
(C) 35
(D) 7
(E) 1
to eat 70 bananas it takes 490 monkey minutes
if it has to finish in 70 minutes we need 490/70 = 7 monkeys
- by ajith
Thu May 13, 2010 4:23 am- Forum: Problem Solving
- Topic: eat 70 bananas
- Replies: 1
- Views: 1086
I differ!ps63739 wrote:1,
referring to examples in the page - http://en.wikipedia.org/wiki/Remainder
"When dividing 26 by 4, 6 is the quotient and 2 is the remainder, because 26=6×4+2."
26/4 = 13/2 ; so by your logic remainder should have been 1 but, instead it is 2.
- by ajith
Thu May 06, 2010 7:49 am- Forum: Problem Solving
- Topic: (x – 2)! is divided by x
- Replies: 10
- Views: 2556