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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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