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标题: 新手求助几题，望大家帮帮忙 [打印本页]

作者: susan22 时间: 2005-10-24 22:02 标题: 新手求助几题，望大家帮帮忙

1、

If p is the product of the integers from 1 to 30, inclusive, what is the greatest integer k for which 3^k is a factor of p?

2、If n is a positive integer, what is the remainder when 3⁸ⁿ⁺³ + 2 is divided by 5？

3、

If 2 different representatives are to be selected at random from a group of 10 employees and if p is the probability that both representatives selected will be women, is p > ?

(1) More than of the 10 employees are women.

(2) The probability that both representatives selected will be men is less than .

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 NOT sufficient.

多谢拉

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