Is the positive integer n even?

Admission Tests GMAT Question Answer

(1) The sum of the first n positive Integers is even.

(2) The sum of the first In positive integers is even.

Statement (1) ALONE is sufficient, but statement (2) atone 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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