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题库 / Prep2007E1-DS-131
The positive integer k has exactly two positive prime factors, 3 and 7. If k has a total of 6 positive factors, including 1 and k, what is the value of k ?
(1) 32 is a factor of k.
(2) 72 is not a factor of k.
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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搞懂第一句和第二句的关系，第一句是限定了K只有两种因子，第二句是说k有6个因子时，求k的值。
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