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题库 / Prep2007E2-DS-130
Set S consists of 20 different positive integers. How many of the integers in S are odd?
(1) 10 of the integers in S are even.
(2) 10 of the integers in S are multiples of 4.
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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零不是偶数
0是偶数
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P2: 不是4的multiple的那些可以是2的multiple