Question

A bag contains 3 red and 5 black balls. A ball is drawn at random from the bag. What is the probability that the ball drawn is not red. 

Answer 1

Bag contains 3 red balls and 5 black balls
Total balls in the bag = 3 + 5 = 8
Probability of getting a ball which is not red = 1 − Probability of getting red ball \[= 1 - \frac{3}{8} = \frac{5}{8}\]