A bag contains 4 red balls, 7 white ball, 3 green and 6 black. If one ball is drawn at random, find the probability that is
(1) Black
(2) Red
(3) Not White
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there are 20 possible outcomes of which ,
probability for a black ball. 6/20=3/10
probability for a red ball. 4/20=1/5
probability for a not white balll.13/20
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