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Question
Five fair coins are tossed simultaneously. The probability of the events that at least one head comes up is ______.
Options
`27/32`
`5/32`
`31/32`
`1/32`
Solution
Five fair coins are tossed simultaneously. The probability of the events that at least one head comes up is `underlinebb(31/32)`.
Explanation:
Total cases = 25 = 32
One of the cases will be all three tails.
So remaining 31 cases are valid.
∴ P(event getting at least one head) = `31/32`.
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