If ~$a, b$~, and ~$c$~ are consecutive integers and ~$0 8?
(1) The product ~$ac$~ is even.
(2)The product ~$bc$~ is a multiple of 4.
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.
答案不对吧。随便举个例子3,5,10。A就错了
Consecutive即是连续数,1说ac even的话就代表了a跟c都是even no.,最小的例子是a=2,b=3,c=4,其后每一个数都是符合8的multiple这个条件,所以1单独充分。2说bc是4的multiple,可以b=3,c=4/b=4,c=5,两者对题目的解答是不一样的所以2不充分。
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为什么是A,求讲解