Question

A bag contains 4 red nd 4 black balls, another bag contain 2 red and 6 black balls one of two bag is selected at rando. And a ball is drawn from the bag which is found to be red . Find the probability that the ball is drawn from the first bag

Answer 1

probability of red ball from first bag = 4/8 = 1/2

I hope it helps you

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Answer 2

probability = no of  favourable out comes /total number of out comes

             n(s)=4+4+6+2

                   =16

  probability of getting a ball p(b) =n(b )    

                                                        n(s)

                                                      =1/16