几道不明白的GWD

xiahuistacy · 发表于 2010-1-8 16:15:09

Q25:

What is the sum of a certain pair of consecutive odd integers?

(1) At least one of the integers is negative.

(2) At least one of the integers is positive.

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

这个题目但是是C 但是我觉得是E 请大家指导

Q31:

A certain quantity is measured on two different scales, the R-scale and the S-scale, that are related linearly. Measurements on the R
-scale of 6 and 24 correspond to measurements on the S-scale of 30 and 60, respectively. What measurement on the R-scale corresponds to a measurement of 100 on the S-scale?

A. 20

B. 36

C. 48

D. 60

E. 84

这个题目是C 但是我完全不知道该怎么做

Q33:

[td]

40

[/td][td]

20

[/td][td]

40

[/td][td]

30

[/td][td]

35

[/td][td]

35

[/td]

	Favorable	Unfavorable	Not Sure
Candidate M
Candidate N

The table above shows the results of a survey of 100 voters each responded “favorable” or “unfavorable” or “not sure” when asked about their impressions of candidate M and of candidate N. What was the number of voters who responded “favorable” for both candidates?

(1) The number of voters who did not respond “favorable” for either candidate was 40.

(2) The number of voters who responded “unfavorable” for both candidates was 10.

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:

这个题目答案是A 我也不知道怎么做类似的题目请大家帮忙

Q34:

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

A. 0

B. 1

C. 2

D. 3

E. 4

这个题目GWD说是A 但是我觉得是E

大家帮忙啦谢谢啊

A

xiahuistacy · 发表于 2010-1-8 16:15:46

Favorable   Unfavorable   Not Sure
Candidate M   40   20   40
Candidate N   30   35   35

The table above shows the results of a survey of 100 voters each responded “favorable” or “unfavorable” or “not sure” when asked about their impressions of candidate M and of candidate N. What was the number of voters who responded “favorable” for both candidates?
(1)   The number of voters who did not respond “favorable” for either candidate was 40.
(2)    The number of voters who responded “unfavorable” for both candidates was 10.

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.

xiahuistacy · 发表于 2010-1-8 16:16:06

那个表格题应该是楼上那个样子的

sherreylovi · 发表于 2010-1-8 16:35:59

25题应该是C，至少一个正一个负，两个连续奇数，那就是1和-1啊

几道不明白的GWD

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