Hi All,
While it might be easy to run through this question without taking any notes (and still get it correct), there's something to be said for practicing to PROVE that your answer is correct. This level of attention to detail will help you to hone your skills on ALL DS questions.
We're told that N and K are positive integers. We're asked if N/K is an EVEN INTEGER. This is a YES/NO question.
Fact 1: N is divisible by 8
IF....
N = 8
K = 1
Then 8/1 = 8 and the answer to the question is YES
IF....
N = 8
K = 8
Then 8/8 = 1 and the answer to the question is NO
Fact 1 is INSUFFICIENT
Fact 2: K is divisible by 4
IF....
N = 8
K = 4
Then 8/4 = 2 and the answer to the question is YES
IF...
N = 7
K = 4
Then 7/4 = 1.75 and the answer to the question is NO
Fact 2 is INSUFFICIENT
Combined, we know...
N is divisible by 8
K is divisible by 4
IF....
N = 8
K = 4
Then 8/4 = 2 and the answer to the question is YES
IF....
N = 8
K = 8
8/8 = 1 and the answer to the question is NO
Combined, INSUFFICIENT
Final Answer:
GMAT assassins aren't born, they're made,
Rich
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Contact Rich at: Rich.C@empowergmat.comThe Course Used By GMAT Club Moderators To Earn 750+ souvik101990 Score: 760 Q50 V42 ★★★★★ ENGRTOMBA2018 Score: 750 Q49 V44 ★★★★★