题目信息
Every trading day, the price of CF Corp stock either goes up by $1 or goes down by $1 with equal likelihood. At the end of 5 trading days, what is the probability that the price of CF Corp stock is up byexactly $3 from its initial price?
A:$$\frac{1}{16}$$
B:$$\frac{1}{8}$$
C:$$\frac{5}{32}$$
D:$$\frac{9}{32}$$
E:$$\frac{3}{8}$$
参考答案及共享解析

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已选答案:
正确答案:
C:$$\frac{5}{32}$$
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