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16 September, 14:30

Two urns both contain green balls and red balls. Urn I contains 6 green balls and 4 red balls and Urn II contains 8 green balls and 7 red balls. A ball is drawn from each urn. What is the probability that both balls are red? a. 14/75 b. 7/25 c. 2/75 d. 7/150

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  1. 16 September, 14:55
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    From the first urn, since there are 10 balls and 4 of which are red then, the update in the expanssion.

    P1 = 4/6 = 2/3

    In the second urn, the probability of picking white is 7/15.

    Pf = (2/3) (7/15) = 21/81
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