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题库 / Prep2007E2-DS-183
If m is a positive odd integer between 2 and 30, then m is divisible by how many different positive prime numbers?
(1) m is not divisible by 3.
(2) m is not divisible by 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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条件二:9,21
想问下条件1，如果m是13，那他只能被13整除，但是如果是25那就能被5和25整除了，这样m能被几个数整除不就不确定吗
25不是质数，是问能被几个质数整除。
清楚了，谢谢啦
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