Search found 16 matches
- by ssiva
Wed Mar 07, 2007 4:25 pm- Forum: Problem Solving
- Topic: GMAT PREP Q
- Replies: 4
- Views: 2532
- by ssiva
Wed Mar 07, 2007 4:19 pm- Forum: Problem Solving
- Topic: gmat q
- Replies: 4
- Views: 3513
- by ssiva
Wed Mar 07, 2007 4:14 pm- Forum: Problem Solving
- Topic: gmat prep q
- Replies: 4
- Views: 2711
- by ssiva
Wed Mar 07, 2007 4:12 pm- Forum: Problem Solving
- Topic: gmat q
- Replies: 4
- Views: 2529
- by ssiva
Wed Mar 07, 2007 4:09 pm- Forum: Problem Solving
- Topic: gmat q
- Replies: 4
- Views: 2989
1/3 + (1/3)(1/3) + (1/3)(1/3)(1/3) = 0.333 + 0.333/3 + 0.3333/9
= 0.333 + 0.111 + 0.03 = 0.474
It is between 1/3 and 8/9
- by ssiva
Wed Mar 07, 2007 4:08 pm- Forum: Problem Solving
- Topic: gmat prep
- Replies: 3
- Views: 2994
If one of the vertex is on the center of the circle, for maximum area of triangle, the height of the triangle should also be the radius.
Area = (1/2)(1)(1) = 1/2
- by ssiva
Wed Mar 07, 2007 2:43 pm- Forum: GMAT Math
- Topic: please suggest: geometry problem from GMATPrep
- Replies: 7
- Views: 4977
1st person will handshake with 9 other persons
2nd person will handshake with 8 other persons but not the first person
3rs person will handshake with 7 other persons but not the first and second person..
so the total handshakes is 9 + 8 + 7 + 6 .... + 1 = 45
Answer D
- by ssiva
Wed Mar 07, 2007 1:53 pm- Forum: Problem Solving
- Topic: Difficult Math Problem #106 - Combinations
- Replies: 11
- Views: 8564
The formula is (n!)/[(n-r)! * r!] for a combination problem
18!/[(14!)(4!)] = (18*17*16*15)/(1*2*3*4) = 3060
- by ssiva
Wed Mar 07, 2007 10:24 am- Forum: Problem Solving
- Topic: gmat prep test
- Replies: 2
- Views: 4285
I am assuming the square is incribed in the cirle.
Since the area of the square is 16. Each side is 4. Hence diagonal is
4*(root 2).
Diagonal of the sqaure is the diameter of the circle. Hence radius is 2*( root 2).
Hence area of circle is pi * square of ( 2*root2) = 8pi
- by ssiva
Wed Mar 07, 2007 10:20 am- Forum: Problem Solving
- Topic: gmt prep q
- Replies: 1
- Views: 6813
p = 10 revs in 60 seconds
q = 40 revs in 60 seconds
in 1 second p does 10/60 = 1/6 revs
in 1 second q does 40/60 = 4/6 revs
in 1 second q does 4/6 - 1/6 = 3/6 = 1/2revs more than p
therefore how many seconds = 6 revs
6 * 1 = x * 1/2
x = 12
- by ssiva
Wed Mar 07, 2007 10:16 am- Forum: Problem Solving
- Topic: gmat prep q
- Replies: 1
- Views: 2315
At the end of the 6th year the tree was 1/5 taller than it was at the end of the 4the year. So height at end of 6th year is greater then height at end of 4th year. ( Note the word "than" in the problem ) height at end of 6th year = height at end of 4th year + height at end of 4th year * (1...
- by ssiva
Mon Mar 05, 2007 10:51 am- Forum: Problem Solving
- Topic: gmat prep question
- Replies: 6
- Views: 3101
The problem asks "the amount of gas used would be what fraction of a full tank??" You have to find the fraction here: Numerator = to be calculated Denominator = 12 ( full tank of gas ) As jayhawlk mentions: one has to find out how much gallons is used for 5 hours. From the problem 1 gallon...
- by ssiva
Mon Mar 05, 2007 10:35 am- Forum: Problem Solving
- Topic: rates gmat prep ques
- Replies: 4
- Views: 2809
rate * time = distance
In the problem the rate is givem in mph which is miles per hour and time is in minutes. They have to be brought to a common reference: either hours or minutes.
- by ssiva
Mon Mar 05, 2007 10:23 am- Forum: Problem Solving
- Topic: gmat prep question
- Replies: 5
- Views: 2995
- by ssiva
Mon Feb 26, 2007 5:39 pm- Forum: Problem Solving
- Topic: Difficult Math Problem #102 - Rate
- Replies: 4
- Views: 3102