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A box contains 4 red balls, 5 green ball...

A box contains 4 red balls, 5 green balls and P white balls. If the probability of randomly picked ball from the box to be a red ball is `1/3`, then find the number of white balls.

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Knowledge Check

  • From a bag containing 6 red balls, 5 green balls and 3 blue balls, the probability of getting a green ball at random………

    A
    `5/14`
    B
    `4/5`
    C
    `5/4`
    D
    None

  • A box contains 2 white balls, 3 black balls and 4 red balls. The number of ways can 3 balls be drawn from the box if atleast one black ball is to be included in the draw is

    A
    64
    B
    56
    C
    46
    D
    44

  • 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`

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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 red ball.

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