two fair dice are thrown once.what is the probability of getting the sum of the numbers on face up is 8

해법

tw o f ai r d i ce a re t h ro w n o n ce . w ha t i s t h e p ro babi l i t y o f g e tt in g t h e s u m o f t h e n u mb ers o n f a ce u p i s 8

\frac{5}{36}

소수

0.13888 \dots

솔루션 단계

The possible outcomes when two dice are rolled are

6 \cdot 6

Therefore, the number of possible outcomes:

6^{2}

Find the number of favorable outcomes of getting the sum of the numbers on face up is 8:

5

Probability

= \frac{number of favorable outcomes}{total number of outcomes}

= \frac{5}{6 ^{2}}

6^{2} = 36

= \frac{5}{36}