lheiannie07 wrote:If n is an integer, is n + 1 odd?
(1) n + 2 is an even integer.
(2) n -1 is an odd integer.
How will i know which statement is sufficient?
OA D
Note that (n -1), n, (n + 1), and (n + 2) are consecutive integers.
Case 1: If (n - 1) is even, then n is odd, (n + 1) is even and (n + 2) is odd.
Case 2: If (n - 1) is odd, then n is even, (n + 1) is odd and (n + 2) is even.
Since we are given that (n + 1) is odd, Case 2 is applicable. Thus, each statement itself is sufficient.
The correct answer:
D
Hope this helps!
-Jay
Download free ebook:
Manhattan Review GMAT Quantitative Question Bank Guide
_________________
Manhattan Review GMAT Prep
Locations:
New York |
Hyderabad |
Mexico City |
Toronto | and many more...
Schedule your free consultation with an experienced GMAT Prep Advisor!
Click here.
