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标题: 求助:gwd 3-11 [打印本页]

作者: xiongluanyu    时间: 2005-11-14 07:05     标题: 求助:gwd 3-11

Q11:

The product of the units digit, the tens digit, and the hundreds digit of the positive integer m is 96. What is the units digit of m?

(1) m is odd.

(2) The hundreds digit of m is 8.

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.

这题根本就不知道什么意思,那位大虾帮帮忙?多谢了


作者: renprince    时间: 2005-11-14 19:48

A.

96=2*2*3*8

(1)if m is odd, the units digit have to be 3, A is suffienct

(2)The hundreds digit of m is 8, the units digit may be 2, 3, 4 or6, B is unsuffienct






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