GMAT/留學申請專業顧問 Donz 之資訊交流園地

242.[殘狗]A集合和B集合，-3≤A＜x,y≤B≤4,A∪B包不包括1？

(1)y＜x。。。。忘了

Dounts: 幫助各位找出去年機經題:

(2011/11/JJ) 

115、【softwhisper87】DS: A和B兩個集合，都是整數。-3 <= A <= x, y <= B <=4.問AUB包不包括整數1. 我好像選的A

       (1) X>Y

        (2) X>0

--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 

(2012/08/JJ) 

164.

2^n/3....餘1
（1）n>0
（2）3^n-（-3)^n=0
（3）根號下2^n>0
我選的2&3

(Dounts: GWD 原題)

For a nonnegative integer n, if the remainder is 1 when 2ⁿ is divided by 3, then which of the following must be true?

I.                   n is greater than zero.

II.                3ⁿ = (-3)ⁿ

III.             √2ⁿ  is an integer.

A. I only

B. II only

C. I and II

D. I and III

E.  II and III

  Answer: E

---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------