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A bag contains 5 red balls and some blue...

A bag contains 5 red balls and some blue balls. If the probability of drawing a blue ball is double that of a red ball, determine the number of blue balls in the bag.

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Knowledge Check

  • A bag contains 5 red and 3 blue balls. If 3 balls are drawn at random without replacement the probability of getting exactly one red ball is ……..

    A
    `(45)/(196)`
    B
    `(135)/(392)`
    C
    `(15)/(56)`
    D
    `(15)/(29)`

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