Question

A bag contains 3 red, 3 white and 3 green balls. One ball is taken out of the bag at random. What is the probability that the ball drawn is –not red.

Answer 1

Total number of balls  = 3 + 3 + 3
= 9

Number of balls which are not red = 3 + 3

Therefore, required probability =`\text { Number of red balls}/text { Total number of balls}`

`=6/9`

`=2/3`

Hence, the probability that a ball drawn is not red is `=2/3`