[求助]为什么我下的GWD数学和CD里的讨论对不上？

grace_cd

我下的是TN-24，我第一套第二道是

Q2:

A certain roller coaster has 3 cars, and a passenger is equally likely to ride in any 1 of the 3 cars each time that passenger rides the roller coaster.  If a certain passenger is to ride the roller coaster 3 times, what is the probability that the passenger will ride in each of the 3 cars?

 

A.        0

B.        1/9

C.        2/9

D.        1/3

E.        1

Answer:

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但讨论连接是

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) More than of the 10 employees are women.

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

十分之一

怎么回事啊？着急得很，因为错了很多题。

另：GWD的数学也是实战题吗？感觉和FEIFEI有点不一样。