Is n divisible by 6? (1) n is divisible by 2 (2) n is divisible by 3
AStatement (1) alone is sufficient; (2) is not.
BStatement (2) alone is sufficient; (1) is not.
CBoth statements together are sufficient; neither alone is.
DEach statement alone is sufficient.
EStatements together are not sufficient.
Answer & Solution
Correct answer: C. Both statements together are sufficient; neither alone is.
1. Each alone: not enough. 2. Together: 2·3 = 6 (gcd(2,3)=1) → n is divisible by 6.
_Source: 501-GMAT-Questions Ch DS / Manhattan Quant Bank_
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