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题库 / Prep2007E2-DS-87
Is the integer n a multiple of 15 ?
(1) n is a multiple of 20.
(2) n + 6 is a multiple of 3.
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.
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
1: n 是20的倍数
2：n+6是3的倍数，故n是3的倍数
最小公倍数是 60可以知道n是15的倍数
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