Question

there are 5 red balls 4 green balls and 6 yellow balls in a box if a ball selected randomly what is the probability of not getting a yellow balls

Answer 1

p(not getting yellow ball) = 9/15

Answer 2

probability of not getting a yellow ball=no. of total balls-no. of yellow balls/total no. of balls
therefore answer is 15-6/15 =>9/15 => 3:5