Search found 3 matches
- by mvshah0101
Thu Dec 14, 2006 9:59 am- Forum: Problem Solving
- Topic: GMATPrep Exponent Problem
- Replies: 5
- Views: 3902
GMATPrep Exponent Problem
Hello all: I ran into this problem on the GMATPrep test. What is the greatest prime factor of 4^17 - 2^28? A. 2 B. 3 C. 5 D. 7 E. 11 This was a tough one because had never dealt with adding and subtracting numbers w/exponents before. I converted 4^17 to 2^34 and I was stumped from there. My natural ...
- by mvshah0101
Thu Dec 14, 2006 7:17 am- Forum: Problem Solving
- Topic: GMATPrep Exponent Problem
- Replies: 5
- Views: 3902
help w./this problem
I was wondering if someone could help me with this problem: We have a bag filled with colored balls: 30 are red, 65 are blue, 110 are green, 50 are yellow, and 89 are black. If we randomly choose balls from the bag, how many must we remove to insure that we remove 70 of the same color? A. 71 B. 110 ...
- by mvshah0101
Wed Sep 06, 2006 5:12 pm- Forum: Problem Solving
- Topic: help w./this problem
- Replies: 3
- Views: 3622