Question

A bag contains 5 white and 6 black balls another contain 4 white and 3 black balls. A ball is chosen from one of the bags.What is the probability that if one ball is chosen from each bag both are same colour

Answer 1

TOTAL NO. OF BLACK BALLS  IN BOTH BAG = 6+3 = 9

TOTAL NO. OF WHITE BALLS IN BOTH BAGS = 5 + 4 = 9

TOTAL NO. OF BOTH WHITE AND BLACK BALLS = 18

SO, PROBABILITY OF ONE BALL IS CHOSEN OF SAME COLOR = 9 / 18

 AND WHICH IS    = 1/2  

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