Data Sufficiency (DS) | Re: If a, b and c are integers, is (a·b) a multiple of 18?

Target question: Is ab a multiple of 18?

Given: a, b and c are INTEGERS

Statement 1: 2a = 3b
This statement doesn't FEEL sufficient, so I'm going to test some values.
There are several values of a and b that satisfy this condition. Here are two:
Case a: a = 3 and b = 2, in which caseab = 6, and 6 is NOT a multiple of 18
Case b: a = 9 and b = 6, in which caseab = 54, and 54 IS a multiple of 18
Since we cannot
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