A container contains 3 red balls and 4 black balls. if one ball is selected at random from the container, what is the probability that is a) black b) red c)blue
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total color ball is 3+4 =7
no of favorable outcome (a) black ball is = 4
probability of getting black ball is 4/7
(b) no of favorable outcome of red ball is = 3
probability of getting red ball is = 3/7
(a)no of favorable outcome of blue ball is = 0
probability of getting red ball is = 0/7 = 0
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