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

Redeem

There are 3 integers, a, b, and c in that order. Are these i

Expert replies
by Max@Math Revolution » Wed Jun 22, 2016 7:52 pm
There are 3 integers, a, b, and c in that order. Are these integers consecutive?
1) a=c-2
2) b>a

*An answer will be posted in 2 days.
Join the discussion
Source: — Data Sufficiency |

by Brent@GMATPrepNow » Fri Jun 24, 2016 10:08 am
Max@Math Revolution wrote:There are 3 integers, a, b, and c in that order. Are these integers consecutive?
1) a=c-2
2) b>a

*An answer will be posted in 2 days.
The words "in that order" are a little confusing.
Are you suggesting that a < b < c ?

Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
Image
Join the discussion

by Max@Math Revolution » Sun Jun 26, 2016 5:16 pm
We can modify the original condition and the question. In order for integers to be consecutive, they need to be a, b(=a+1), c(=a+2). Hence, the difference between c and a needs to be 2. Thus, the answer is yes for the condition 1). The correct answer is A.

- Forget conventional ways of solving math questions. In DS, Variable approach is the easiest and quickest way to find the answer without actually solving the problem. Remember equal number of variables and independent equations ensures a solution.
Join the discussion