Q22: （答案给的是1/4，但我选1/8，望赐教）

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?

Q33: （答案竟然给了两个，一个A，一个B，我选B，望赐教）

In the decimal representation of x, where 0 < x < 1, is the tenths digit of x nonzero?

(1)   16x is an integer.

(2)   8x is an integer

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.

第一题  :  扔一次,出现一面的概率是 1/2,连续扔 三次 就是  1/8, 题目问的是 出现同一面的概

率是好多,没有问你 是正面还是反面,所有还要乘以 2了 ...就是 1/4了 ~

22。连续三次正面和反面的概率各1/8，加起来1/4；

33。b吧，十分之几乘以8的时候才会大于1，百分之几乘以8的时候，肯定小于1（几代表小于10得数）

         但是百分之几和百分之十几乘以16都有可能大于1