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22 November, 00:22

A bag contains 3 red, 4 black and 2 white balls. what is the probability of drawing a red ball and then a white ball, if each ball is returned to the bag immediately after it is drawn? 2/27 1/9 1/3 4/27 2/9

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  1. 22 November, 00:25
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    Total number of balls = 3 + 4 + 2 = 9

    red ball = 3

    white ball = 2

    P (red, then white) = (3/9) (2/9) = 6/81 = 2/27

    Answer: 2/27
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