Question

a bag contains 20 balls out of which x balls are red.

1) if one ball is drawn at random from the bag , find the probability that it is not red.

2) if 4 more balls are put into the bag , the probability of drawing a red ball will be 5/4 Times the probability of drawing a red ball in the first case. Find the value of x .

Answer 1

Hope it is correct.......

Answer 2

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