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[Data Sufficiency]
试题详情
题目：
What is the remainder when the two-digit, positive integer x is divided by 3 ?
(1)The sum of the digits of x is 5.
(2)The remainder when x is divided by 9 is 5.
(1)The sum of the digits of x is 5.
(2)The remainder when x is divided by 9 is 5.
选项:
A、 Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B、 Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C、 BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D、 EACH statement ALONE is sufficient.
E、 Statements (1) and (2) TOGETHER are NOT sufficient.
答案:
D
提问：
May 老师，这道题的条件一怎么得出呀？这道题的做题过程能讲一下吗？做题的时候一下子反应不过来！
解答：
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提问：
May 老师，这道题的条件一怎么得出呀？这道题的做题过程能讲一下吗？做题的时候一下子反应不过来！
解答：
点赞1
阅读2478
提问：
(2) The remainder when x is divided by 9 is 5.
我想问一下知道一个式子x=9k+5，问题是x=3k+r 那么这个余数是怎样求出来的呢？我知道这个数是9的倍数肯定是3的倍数，但是余数的求法是带入k=1 这样来解出r=2的吗？
解答：
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阅读2523
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