Question

a bag contains 40 balls out of which some are red some blue and remaining are black if the probability of drawing a red ball is 11/20 and that of the blue ball is 1/5 then the number of black ball is what?

Answer 1

Hey mate Here your answer
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Answer 2

Answer:

Number of red ball = 11/20×40=22

Number of blue ball =1/5×40=8

Number of black ball =40-22-8=10