【GMAT考试真题解析】GMAT数学题目-If n is a positive
If n is a positive integer, is n odd?
(1) 3n is odd.
(2) n + 3 is even.
Statement (1) ALONE is sufficient but statement (2) ALONE is not sufficient.
Statement (2) ALONE is sufficient but statement (1) ALONE is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are not sufficient.
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