A box contains 12 black balls numbered 1 to 12, 12 white balls numbered 1 to 12
MATHEMATICS · Multi-part · A Level · Mathematics · Probability · Probability
Problem
A box contains 12 black balls numbered 1 to 12, 12 white balls numbered 1 to 12, and 6 red balls numbered 1 to 6. One ball is drawn at random.
(a) Determine the probability that the ball drawn is black and its number is a multiple of 4.
(b) Determine the probability that the ball drawn is white or its number is a prime.
(c) Determine the probability that the ball drawn is neither red nor has an odd number.