Question

An urn contains 10 red and 8 white balls. One ball is drawn at random. Find the probability that the ball drawin is white.

Answer 1

Number of possible events = 10 + 8 = 18

Let A be the occurence of favourable event such that it is a white ball.

$\therefore$ Number of events = 8

$\therefore P\left(A\right)=\frac{8}{18}=\frac{4}{9}$