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A bag contains n+1 coins. If is known th...

A bag contains `n+1` coins. If is known that one of these coins shows heads on both sides, whereas the other coins are fair. One coin is selected at random and tossed. If the probability that toss results in heads is 7/12, then find the value of `ndot`

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The correct Answer is:
`(5)`
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Knowledge Check

  • Three coins are tossed then probability of at least one head

    A
    `(1)/(8)`
    B
    `(3)/(8)`
    C
    `(7)/(8)`
    D
    none of these

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    A
    `(1)/(8)`
    B
    `(3)/(8)`
    C
    `(7)/(8)`
    D
    none of these

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