Chapter 13.3, Problem 25E

To determine

To find: The probability of rolling 2 fives.

Answer to Problem 25E

The probability rolling 2 fivesis $\frac{1}{36}$ .

Explanation of Solution

The probability of the successful outcome of an event is given by,

  $P\left(s\right)=\frac{s}{s+f}$

The $P\left(\text{2}\text{fives}\right)$ is calculated as,

  $\begin{array}{c}P\left(\text{2}\text{fives}\right)=\frac{1}{1+35}\\ =\frac{1}{36}\end{array}$

Therefore, the probability of $P\left(\text{2}\text{fives}\right)$ is $\frac{1}{36}$ .