Question

A bag contains 5 red Balls and some blue balls.
If probablity of drawing a blue ball at random from
bag is 3 times that of red ball
red ball , find number of blue balls in bag.
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Answer 1

Answer:

the probability of any event is mn. According to the problem, the probability of drawing a blue ball from the bag is thrice that of a red ball. Hence, the total number of blue balls in the bag is 15.