Question

a bag contain 5red balls and some blue balls the probability of dwaring blue ball is double of red balls ,find number of blue balls

Answer 1

red balls=5
since probability of drawing blue ball is double of red balls
therefore blue balls=2×5=10

Answer 2

no of Red balls=5
let no of Blue balls=x
p(red)=5/(5+x )
therefore p(blue)=10/(5+x)
no of blue balls=10

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