Question

A bag contains 4 red balls, 5 green balls and 6 white balls. a ball is drawn at random from the box. what is the probability that the ball drawn is either red or green?

Answer 1

R = 4
G=5
W=6

S=15
Pr..4/15
PG..1/3
PW..6/15

Answer 2

no. of red balls = 4
no. of green balls = 5
no. of white balls = 6

Total no. of balls = 4+5+6
= 15
probability of getting a red or green ball =

no. of green balls + no. of red balls / total no. of
balls

= (5+4)/15
= 9/15
= 3/5