Search found 40 matches
- by sushantgupta
Sat May 07, 2011 11:47 pm- Forum: Data Sufficiency
- Topic: Interesting DS question
- Replies: 49
- Views: 22557
- by sushantgupta
Tue May 03, 2011 9:18 pm- Forum: Problem Solving
- Topic: If k is an integer
- Replies: 56
- Views: 28303
- by sushantgupta
Tue May 03, 2011 9:13 pm- Forum: Data Sufficiency
- Topic: ds - value question
- Replies: 39
- Views: 19933
- by sushantgupta
Tue May 03, 2011 9:02 pm- Forum: Problem Solving
- Topic: Airplane
- Replies: 16
- Views: 14196
1. xyz < 0 means odd number of digits are negative in this case 1 or 3. No real information and hence not sufficient. 2. xy<0 means x and y are on opposite side of the number line . Hence x<0 & y> 0 or x>0 and y<0. This information is also not sufficient. With 1 & 2 we have z > 0 as out of x...
- by sushantgupta
Sun May 01, 2011 11:11 pm- Forum: Data Sufficiency
- Topic: points on a number line.
- Replies: 43
- Views: 24326
Probability of having 3 girls = 1/2*1/2*1/2 = 1/8
Probability of having 3 boys = 1/2*1/2*1/2 = 1/8
Pobability of having same gender = 1/8+1/8 = 1/4
- by sushantgupta
Sun May 01, 2011 10:59 pm- Forum: Problem Solving
- Topic: Probability
- Replies: 35
- Views: 22911
- by sushantgupta
Sun May 01, 2011 10:50 pm- Forum: Data Sufficiency
- Topic: Average weight of men and women
- Replies: 39
- Views: 25011
- by sushantgupta
Sun May 01, 2011 10:34 pm- Forum: Problem Solving
- Topic: square picture
- Replies: 24
- Views: 19404
Answer is 12pi. Here are 2 important properties: 1. Perpendiculars on the sides of equilateral triangles intersect eacho other in the ratio 2:1. 2. If an equilateral triangle is inscribed in a circle the perpendiculars intersect each other ot the center of the circle. Based on 1 and 2 above : radius...
- by sushantgupta
Sun May 01, 2011 10:22 pm- Forum: Problem Solving
- Topic: equilateral triangle pS
- Replies: 61
- Views: 34603
- by sushantgupta
Tue Apr 12, 2011 10:10 pm- Forum: Critical Reasoning
- Topic: undermines the conclusion
- Replies: 110
- Views: 46253