K is a set of integers such that
i) if x is in K, then 2x is in K
ii) if each of x and y is in K, then x + y is in K
Is 15 in K?
(1) 1 is in K
.(2) 3 is in K.
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AStatement 1 ALONE is sufficient to answer the question, but statement 2 alone is NOT sufficient.
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BStatement 2 ALONE is sufficient to answer the question, but statement 1 alone is NOT sufficient.
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CBOTH statements 1 and 2 TOGETHER are sufficient to answer the question, but NEITHER statement ALONE is sufficient.
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DEach statement ALONE is sufficient to answer the question.
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EStatement 1 and 2 TOGETHER are NOT sufficient to answer the question.
显示答案
正确答案: D