【GMAT考满分数据洞察DS题库】If x and y are positive integ_真题_答案

题目内容

If x and y are positive integers, is $x-y^2+25y$ divisible by 25?

(1) x is a multiple of 30 and y is a multiple of 15

(2) x = y

AStatement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
BStatement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
CBOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
DEACH statement ALONE is sufficient.
EStatements (1) and (2) TOGETHER are not sufficient.

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正确答案: E

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