In a form 1A class there are 25 boys and 20 girls.in a form 1B there are 20boys and 15girls.A learner is choosen at random from each class.find the probability that

Question

(a):both learners are boys
(b):the choosen learners are of different sexes????

Answer 1

If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.

a. 25/45 * 20/25 = ?

b. 25/45 * 15/25 = ?

or 20/45 * 20/25 = ?

Either-or probabilities are found by adding the individual probabilities.