[計量] 問題
5. k is a positive integer. Is k a prime number?
(1)No integer between 2 and 根號(k) inclusive divides k evenly.
(2)No integer between 2 and k/2 inclusive divides k evenly,
and k is greater than 5.
有人可以幫我解釋一下嗎???謝謝
答案是d。
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