Question

A & B appear in a interview for 2 vacancies in the same post. the prob, the prob,of A' selection is 1/6 & that of B' selection is 1/4, find the prob. that (i) both of them are selected (ii) only one of then is selected (iii) of then is selected (iv) at least one of them is selected

Answer 1

(iv)at least one of them is selected

P(at least one of them is selected) =1- P(none is selected) = 1- 5/8 = 3/8.