1. If q is a positive integer less than 17 and r is the remainder when 17 is divided by q, what is the value of r?
1. q>10
2. q=2^k, where k is a positive integer
Ans. B
what I am missing here? why answer is B when we know only that k is a positive integer?
GMAT Prep Test 2
This topic has expert replies
- jayhawk2001
- Community Manager
- Posts: 789
- Joined: Sun Jan 28, 2007 3:51 pm
- Location: Silicon valley, California
- Thanked: 30 times
- Followed by:1 members
1 - insufficient. q can be 11...16 and each yields a different value for r
2 - sufficient. Values for q are 2, 4, 8 and 16
17 / 2 remainder is 1
17 / 4 remainder is 1
17 / 8 remainder is 1
17 / 16 remainder is 1
Hence B
2 - sufficient. Values for q are 2, 4, 8 and 16
17 / 2 remainder is 1
17 / 4 remainder is 1
17 / 8 remainder is 1
17 / 16 remainder is 1
Hence B