<求助>天山-5-22

xiaoxiao1117

看到这个题还没有人问，

Q22

When tossed, a certain coin has equal probability of landing on either side. If the coin is tossed 3 times, what is the probability that it will land on the same side each time?

A. 1/8

B.1/4

C.1/3

D.3/8

E 1/2

多谢!

escortid

2/2^3=1/4

xixi2004

（1/2）^3=1/8 一面的，还要再*2=1/4， 对不起。

[此贴子已经被作者于2005-8-25 16:22:43编辑过]

皮杰

(1/2)^3*2=1/4

xiaoxiao1117

Thanks a lot!