Question

A bag contains 5 red, 8 green and 7 white balls, One ball is drawn at random from the bag. What is the probability of getting a white ball or a green ball? 

Answer 1

GIVEN: A bag contains5 red, 8 green and 7 white balls

TO FIND: Probability of getting a white ball or a green ball.

Total number of balls `5+8+7=20`

Total number of green or white balls `8+7=15` 

`"We know that PROBABILITY" =" Number of favourablr event"/"Total number of event"`

`"Hence probability of getting a green or a white ball "= 15/20=3/4` 

`"Hence probability of getting an green or white ball "= 3/4`