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标题: tt gwd-14-21 就要上考场了,请NN 们SEE SEE [打印本页]

作者: lanyuqi 时间: 2006-11-5 18:50
标题: tt gwd-14-21 就要上考场了,请NN 们SEE SEE

Q21:

The results of a certain experiment included 6 data values that were all multiples of the same number c, namely, c, 8c, 2c, 5c, 4c, and 4c. Was the average (arithmetic mean) of the 6 data values greater than 8?

(1) c < 4

(2) c > 2

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.

Answer: B

这道题我计算得出C要大于2.4才行，而且number只是数字，没有要求是整数啊！

作者: vivian850831 时间: 2006-11-5 19:47

先算这6个数的AVERAGE是4C [（c+8c+
            2c+
            5c+
            4c+ 4c.）/6]=4C

所以 C》2就可以了。LZ一定是马虎大意不知什么地方算错了~别紧张啊~

作者: lanyuqi 时间: 2006-11-5 21:56

唉呀，真是太丢人了，我竟然把后面的那个4C给忘记了，真么连这样的错误都犯啊，哭死了！

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