Multiple Choice Questions on If three coin are tossed simultaneously the probability of getting at least one head is ........ for NDA Exam Preparation

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Multiple Choice Questions

If three coin are tossed simultaneously the probability of getting at least one head is ........

Mathematics (NDA) Probability
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    If three-coin are tossed simultaneously, the probability of getting at least one head is?

    1/8

    Incorrect Answer

    3/8

    Incorrect Answer

    7/8

    Correct Answer

    5/8

    Incorrect Answer
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    Explanation:

    N=3  coin

    P(H)=1/2

    x≥1

    now  p(x≥1)=1-p(x)

    =1- 3 C0 (1/2)0 (1-1/2)3

    =1-1/8 

    =7/8

    By: bhavesh kumar singh
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