ProbabilityMedium
Question
A bag initially contains 1 Red & 3 Blue balls. An experiment consists of selecting a ball at random, noting down its colour and replacing it with an additional ball of same colour. If 3 such trials are made then-
Options
A.probability that exactly one blue ball is drawn is 
B.probability that exactly one blue ball is drawn is 
C.probability that atleast one blue ball is drawn is 
D.probability that atleast one blue ball is drawn is
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