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the probabilities of getting 3 heads whe...

the probabilities of getting 3 heads when tossing 7 coins is

A

21/128

B

35/128

C

45/128

D

23/128

Text Solution

Verified by Experts

The correct Answer is:
B
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Knowledge Check

  • The probability of getting two heads when tossing five coins is

    A
    `1//2`
    B
    `3//8`
    C
    `5//16`
    D
    `7//128`

  • The probability of getting atmost 4 heads when tossing 7 coins is

    A
    `57//64`
    B
    `99//128`
    C
    `5//16`
    D
    `1//2`

  • The probability of getting exactly 2 heads when tossing 7 coins is

    A
    `21//128`
    B
    `15//16`
    C
    `30//16`
    D
    `1//2`

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