Total possible outcomes = 11C2 = 55 (if picking order doesnt matter) Favourable outcomes = 5 * 5 = 25 Required probability = 25/55 = (5/11).
Two digits are selected at random from digits 1 through 9. If sum is even, find the probability that both numbers are odd?
A bag contain 5 blue and 4 black balls. Three balls are drawn at random. What is the probability that 2 are blue and 1 is black.
There are 8 boys and 5 girls in a class. If four students are selected at random, what is the probability that 2 girls and 2 boy are selected?
