Question

A ball is drawn at random from a box containing 12 white, 16 red and 20 green balls. Determine the probability that the ball drawn is red.

Answer 1

Total number of balls in the box = 48 

Total possible outcomes on drawing a ball = 48 

n(S) = 48 

Event of drawing a red ball = E = 16 

n(E) = 16 

Probability of drawing a red ball = `(n(E))/(n(S)) = 16/48 = 1/3`