Question

a bag contains 40 balls of same shape and weight among these 10 balls are white 16 are red and rest are black if a ball is taken out at random what is the probability that a ball drawn is not black

Answer 1

no.of white balls=10
no.of red balls=16
total no.of balls=40
no.of black balls=14

p(e)=40-14/40
=26/40
=13/20=0.65

Answer 2

total no. of balls=40
no of balls not black=10+16=26
probability of taking out a ball not black=26/40=13/20