GMAT考题：Prep2007E2-DS-171

GMAT考题

If k is a positive integer and the tens digit of k + 5 is 4, what is the tens digit of k ?

(1) k > 35
(2) The units digit of k is greater than 5.

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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