If a fair coin is tossed 6 times, what is the probability, to the nearest thousandth, of getting exactly 6 heads?

解

I f a f ai r co in i s t osse d 6 t im es, w ha t i s t h e p ro babi l i t y, t o t h e n e a res t t h o u s an d t h, o f g e tt in g e x a c tl y 6 h e a d s ?

\frac{1}{64}

十進法表記

0.015625

解答ステップ

The possible outcomes when a coin is thrown

6

times are

2 \cdot 2 \cdot 2 \cdot 2 \cdot 2 \cdot 2

Therefore, the number of possible outcomes:

2^{6}

Find the number of favorable outcomes of to the nearest thousandth of getting exactly 6 heads:

1

Probability

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

= \frac{1}{2 ^{6}}

2^{6} = 64

= \frac{1}{64}