A fair coin is tossed four times what is the probability of obtaining at least three heads

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A fair coin is tossed four times what is the probability of obtaining at least three heads

解答

516

十进制

0.3125

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The possible outcomes when a coin is thrown four times are 2· 2· 2· 2
Therefore, the number of possible outcomes: 2⁴

Find the number of favorable outcomes of obtaining at least 3 heads: 5

Probability = number of favorable outcomestotal number of outcomes

=52⁴

2⁴=16

=516

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+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
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A fair coin is tossed four times what is the probability of obtaining at least three heads

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