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`

Answer 1

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`.