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QuantMadeEasy
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Harshika_K
Is integer x even?

(1) 3x is even
(2) x/3 is not odd

Why is the answer not D?

(2) is not sufficient because "x/3 is not odd" does not imply it’s even. For example, x/3 is not odd when x = 1 and also when x = 6, leading to two different answers to the question.

P.S. It’s worth mentioning that such questions are no longer part of the GMAT Focus syllabus.
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Step 1: Understanding statement 1 alone
3x is even, means product of 3 and x is even, which is possible when x is even
Sufficient

Step 2: Understanding statement 2 alone
x/3 is not odd
lets say x = 1, then 1/3 is not odd
when x = 2, then also 2/3 is not odd
Insufficient

A is correct


Study from the best self learning GMAT quant course:
https://www.udemy.com/course/best-gmat- ... 37602183BB

Harshika_K
Why is the answer not D?
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Helpful for those preparing for the GMAT and EA
Bunuel
Harshika_K
Is integer x even?

(1) 3x is even
(2) x/3 is not odd

Why is the answer not D?

(2) is not sufficient because "x/3 is not odd" does not imply it’s even. For example, x/3 is not odd when x = 1 and also when x = 6, leading to two different answers to the question.

P.S. It’s worth mentioning that such questions are no longer part of the GMAT Focus syllabus.
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