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Discussion :: Probability

  1. A bag contains five white and four red balls. Two balls are picked at random from the bag. What is the probability that they both are different color?
    2. A.
    4/9
    B.
    5/9
    C.
    7/9
    D.
    8/9
    E.
    1/3

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    Answer : Option B

    Explanation :

    Two balls can be picked from nine balls in ⁹C₂ ways.

    We select one white ball and one red ball from five white balls and four red balls. This can be done âµC₁ . ⁴C₁ ways.

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