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There are 3 red and 4 white balls in a ...

There are 3 red and 4 white balls in a bag. If a ball is taken randomly then calculate the probability of it to be a red ball.

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The correct Answer is:
`3/7`
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There are 3 red and 4 white balls in a bag. If a ball is taken randomly then calculate the probability of it to be a white ball.

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Knowledge Check

  • A bag contains 5 black balls 4 white balls and 3 red balls . If a ball is selected at random , the probability that it is a black or a red ball, is

    A
    `1/3`
    B
    `1/4`
    C
    `(5)/(12)`
    D
    `2/3`

  • A bag contains 5 black balls 4 white balls and 3 red balls. If a ball is selected at random the probability that it is a black or a red ball is

    A
    `1//3`
    B
    `1//4`
    C
    `5//12`
    D
    `2//3`

  • A box contains 4 red and 8 white balls . If 4 balls are drawn one by one with replacement then the probability of getting 3 white balls is

    A
    `(16)/(81)`
    B
    `(8)/(81)`
    C
    `(32)/(81)`
    D
    `(1)/(32)`

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