Question

A bag contains 5 red, 8 green and 7 white balls. One ball is drawn at random from the bag. Find the probability of getting: 1. a white ball or a green ball. 2. Neither a green nor a red ball

Answer 1

Red=5
Green=8
White=7

Total balls are=5+8+7=20 balls
Total=20 balls

1.Probability of a white ball
=7/20
Probability of a green ball
=8/20
=2/5

2.Neither green not red is White

Probability of white ball
=7/20