2. If 2 different representatives are to be selected at random from a group of 10 employees and if p is the probability that both representatives selected will be women, is p > 1/2?

(1)More than 1/2 of the 10 employees are women.

(2)The probability that both representatives selected will be men is less than 1/2

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.

第（2）个条件没有明白，麻烦解释下？谢谢

 Q5.From a group of 3 boys and 3 girls, 4 children are to be randomly selected.  What is the probability that equal numbers of boys and girls will be selected?

  ANSWER: 3/5

怎么解的这题？？

Q13:

What is the value of the integer n?

(1)              n(n + 2) = 15

(2)              (n + 2)ⁿ = 125

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 

我认为应该将（1）（2）两个条件合起来才能得到答案啊，怎么2就可以了，谢谢请解答一下哈！

Q15:

Which of the following fractions has a decimal equivalent that is a terminating decimal?

  A.10/189    B.15/196    C.16/225    D.25/144    E.39/128

没看懂这道题目是什么意思？？？

第一题排列组合我不会

第二题单看第二个条件就可以知道n=3，还有别的情况么？没有了吧？所以不用1的。

第三个题目我的理解就是问除了之后，有的不是会无限循环下去么？他问你哪个不会

无限的循环下去。就是会terminnate的，会终结的。我看应该是E吧，前面四个都是

无限的.....

10个里面选2个代表,(2 different representatives )=不是一个人,选出同时是2个女人的情况>1/2

如果是大于1/2,女人个数=5的话是0.222的可能,所以肯定大于5,应该最少7个人才行,自己推吧,条件2=男人最多6个,条件一+条件2=再临界条件下总共13人了.(要是考试遇到这种变太,就猛一个,呵呵,确实没时间琢磨,反向推,真麻烦)

剩下两道题琢磨琢磨就会了呵呵,加油,对了谁知道怎么找适合这个月的题库啊.阅读什么的也一样么.换题么,还是怎么找题库 啊