What is the probability of not rolling a number larger than 4 with a fair die?

解

Wha t i s t h e p ro babi l i t y o f n o t ro ll in g a n u mb er l a r g er t han 4 w i t h a f ai r d i e ?

\frac{5}{6}

十進法表記

0.83333 \dots

解答ステップ

Find the probability of rolling a number larger than 4 with a fair die:

\frac{1}{6}

Probability of not rolling a number larger than 4 with a fair die

= 1 -

Probability of rolling a number larger than 4 with a fair die

= 1 - \frac{1}{6}

1 - \frac{1}{6} = \frac{5}{6}

= \frac{5}{6}