a coin is tossed 3 times. what is the probability of getting 3 tails up

Решение

a co in i s t osse d 3 t im es . w ha t i s t h e p ro babi l i t y o f g e tt in g 3 t ai l s u p

\frac{1}{8}

десятичными цифрами

0.125

Шаги решения

The possible outcomes when a coin is thrown three times are

2 \cdot 2 \cdot 2

Therefore, the number of possible outcomes:

2^{3}

Find the number of favorable outcomes of getting 3 tails up:

1

Probability

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

= \frac{1}{2 ^{3}}

2^{3} = 8

= \frac{1}{8}