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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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A bag contains (2n+1) coins. It is known that n of these coins have a head on both sides whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is (31)/(42) , determine the value of n .

A bag contains (2n+1) coins. It is known that n of these coins have a head on both sides whereas the rest of the coins are fair. A coin is picked up at random from the bag and is tossed. If the probability that the toss results in a head is (31)/(42) , determine the value of n .

Knowledge Check

  • A coin is tossed 4 times . The probability of getting atleast one head is

    A
    `1/16`
    B
    `1/8`
    C
    `7/8`
    D
    `15/16`

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