BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

GMAT PREP QUESTION, can any one solve this one?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Master | Next Rank: 500 Posts
Posts: 124
Joined: Thu Aug 23, 2007 5:11 am
Thanked: 2 times

by gmatguy16 » Thu Nov 29, 2007 6:24 pm
4^17 - 2 ^28= (2^2)^17 - 2 ^ 28 = 2^34-2^28=
2^28(2^6-1)=2^28 * 63..so factors are 2 , 3, 7 hence the answer....
Top
Source: — Problem Solving |
Master | Next Rank: 500 Posts
Posts: 214
Joined: Wed Nov 14, 2007 6:30 am
Thanked: 15 times

by sujaysolanki » Thu Nov 29, 2007 10:16 pm
2^34-2^28= 2^28(2^6-1)
and then =2^28 * 63


take 2^28 common ...that leaves 2^6-1 where 2^6 = 64
Top
Post new topic Post Reply
• Page 1 of 1