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受欢迎的 Word Problems >

Two coins are flipped. What is the probability that both coins land on heads?

解答

Tw o co in s a re f l i pp e d . Wha t i s t h e p ro babi l i t y t ha t b o t h co in s l an d o n h e a d s ?

解答

\frac{1}{4}

+1

十进制

0.25

求解步骤

The possible outcomes when a coin is thrown two times are

2 \cdot 2

Therefore, the number of possible outcomes:

2^{2}

Find the number of favorable outcomes of both coins land on heads:

1

Probability

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

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

2^{2} = 4

= \frac{1}{4}

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