How many different prime numbers are factors of the positive integer n ?
(1) Four different prime numbers are factors of 2n.
(2) Four different prime numbers are factors of n2.
為什麼答案是B呢?
請幫忙解釋, 謝謝^^
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johnqrock \$m[1]:How many different prime numbers are factors of the positive integer n ?
(1) Four different prime numbers are factors of 2n.
(2) Four different prime numbers are factors of n2.
為什麼答案是B呢?
請幫忙解釋, 謝謝^^
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