问题如下图：
选项：
A. 
B. 
C. 
解释：
请问为什么不是5到1，1至5和5至1代表什么
NO.PZ2017092702000062 问题如下 If the probability thZolCompany sales exceelast year’s sales is 0.167, the os for exceeng sales are closest to: A.1 to 5. B.1 to 6. C.5 to 1. A is correct. Given os for E of a to the implieprobability of E = a/(a + b). Statein terms of os a to b with a = 1, b = 5, the probability of E = 1/(1 + 5) = 1/6 = 0.167. This result confirms tha probability of 0.167 for beating sales is os of 1 to 5.本题直接代入公式即可os for “excee=p/(1-p)=0.167/（1-0.167）≈1 to 5. 这个os是什么计算，基础课里没有讲这个。
老师，这个题目我用0.167/(1-0.167)=0.200480,最接近于1 to 5，所以选对了，我这个没问题吧？但是这个答案的解析有点看不懂，麻烦帮我解答一下吧，谢谢！
