又来GWD的题~继续骚扰大家~

zhongyaya · 发表于 2010-9-7 23:40:29

Q16:

If m, p, and t are positive integers and m < p < t, is the product mpt an even integer?

(1)t – p = p - m

(2) t – m = 16

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.

答案选E~这题我感觉应该选D~因为1和2都可以推断出 t 和 m同奇偶，所以无论p为奇数或者是偶数，这三者的积都是偶数。

Q32:

Seven different numbers are selected from the integers 1 to 100, and each number is divided by 7.What is the sum of the remainders?

(1)The range of the seven remainders is 6.

(2) The seven numbers selected are consecutive integers.

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.

我感觉条件1和2是一样的，余数都是1~6，我选的是D，答案选的是C

Q34:

The operation Θ is defined by x Θ y =
+ for all nonzero numbers x and y.If z is a number greater than 1, which of the following must be true?

I.x Θ (-z) = 0

II.z Θ
= 1
III.
Θ = z

A.I only
B.I and II only

C.I and III only
D.II and III only
E.I, II, and III
答案选E，我选的D~

求解答~感激不尽~

zhongyaya · 发表于 2010-9-8 13:56:16

顶~

Leliolevine · 发表于 2010-9-8 14:03:00

16、选E吧。。t、m同奇偶没错，若都是奇数，那么p是奇数，乘积是奇数；若p是偶数，乘积是偶数。都是偶数的时候同理。。
32、选B （1）说的是余数的最大值减最小值是6，不一定是0，1，2，3，4，5，6 可以使0，0，0，0，0，0，6，或者0，1，1，1，1，6这种的。。（2）七个连续整数除以7的余数是0，1，2，3，4，5，6没错的。。
34、题目不完整吧。。

zhongyaya · 发表于 2010-9-9 23:12:33

第32题，题目说是不相同的七个数唉~楼上把题目看错了吧

学海无涯啊 · 发表于 2010-9-10 08:43:22

第32题，题目说是不相同的七个数唉~楼上把题目看错了吧

-- by 会员 zhongyaya (2010/9/9 23:12:33)

没看错，题目说的是7个不同的数，但是(1)里说的是“the range of the seven reminders is 6", 所以这些reminders 可以是一样的。
比如 7， 14，21，28，35，42，48 这7个不同的数的reminder就是0，0，0，0，0，0，6。

zhongyaya · 发表于 2010-9-10 22:26:24

嗯~了解了~THX~

又来GWD的题~继续骚扰大家~

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