A is divided by B = ？及一道GWD数学题求解

lifineboss · 发表于 2010-6-8 02:51:40

1、A is divided by B；= ?
2、A divide by B; = A/B （字典上）
3、A divided by B; = A/B （新东方讲义上）
第一个是GWD题里的，怎么个理解法？
另外，不管哪种方式，在这道题里，如果n取5，满足条件1、2，这时就整除了，r=0，可题目说r是rimainder？？？对定义有点晕了，余数是0可以说有余数吗？
多谢。
Q15:
If n is a positive integer and r is theremainder when (n – 1)(n + 1) is divided by 24, what is the valueof r?
(1) 2 is not a factor of n.
(2) 3 is not a factor of n.

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 statements TOGETHER are sufficient,but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOTsufficient.
Answer: C

lifineboss · 发表于 2010-6-8 12:18:03

A is divided by B = ？及一道GWD数学题求解

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