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Four unbiased coins are tossed. What is the probability of getting exactly four heads?
Question

Four unbiased coins are tossed. What is the probability of getting exactly four heads?

A.

1/4

B.

1/8

C.

1/16

D.

1/12

Correct option is C

Given:

Four unbiased coins are tossed.

We need the probability of getting exactly four heads.

Formula used:

Probability = Favorable outcomes / Total outcomes

Solution:

Total outcomes for tossing 4 coins = 24 = 16

Favorable outcomes for 4 heads = 1 (HHHH)

Probability = Favorable outcomes / Total outcomes

=> Probability = 1/16

∴ The correct answer is option (c).

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