題目:
If m is an integer, is m odd?
(1) m/2 is NOT an even integer
(2) m-3 is an even integer.
答案: B
為什麼(1) is not sufficient
OG不是解释的很好吗? Not an even integer includes not an integer at all. so m=10, and m=3 both satisfy the condition.
我是不懂
if m=10的話
那m/2 must be even number
但它給的Data is m/2 NOT even number
Sorry
請大家忘記我的問題
我搞錯了
我想通了
問了一個這們白癡的問題
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