Question

a bag contains 40 balls out of which 15 are black then probability of a ball not black

Answer 1

Probability that the ball is not black= 1-(15/40)
=5/8
Another way to solve,
different colored balls =40-15=25
therefore, 25/40= 5/8
Can this be marked 'Brainliest' if you find it helpful? :)

Answer 2

Hii here is your answer.....


◆Formula of probability= favourable outcomes/Total number of outcomes

◆Total balls = 40
◆black balls =15
P(black ball)=15/40
=3/8
P(not black)=1-3/8
◆=8-3/8
◆=5/8
So the probability of a ball not black is 5/8