Two urns each contain green balls and blue balls. Urn I contains 4 green balls and 6 blue balls, and Urn ll contains 6 green balls and 2 blue balls. A ball is drawn at random from each urn. What is the probability that both balls are blue?
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the probablity that both balls are blue is- no of blue balls
--------------------------
total no of balls in Urn1
=6 3
---- = ----
10 5
similarly
in ll Urn = 2 1
---- = ----
8 4
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