这个odds是什么意思

问题如下：

If the probability that Zolaf Company sales exceed last year’s sales is 0.167, the odds for exceeding sales are closest to:

选项：

A.

1 to 5.

B.

1 to 6.

C.

5 to 1.

解释：

A is correct.

Given odds for E of a to b, the implied probability of E = a/(a + b). Stated in terms of odds a to b with a = 1, b = 5, the probability of E = 1/(1 + 5) = 1/6 = 0.167. This result confirms that a probability of 0.167 for beating sales is odds of 1 to 5.

本题直接代入公式即可：odds for “exceed”=p/(1-p)=0.167/（1-0.167）≈1 to 5.