A jar contains 24 marbles. Some of these are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is . Find the number of blue marbles in the jar.

Question

Philoid · Accepted Answer

Total numbers of elementary events are 24

Let E be the event of getting a green ball

Let number of green ball be x

P (green ball) = P (E) = 2/3 (given)

But 2/3 = x/24

X = 16

Hence number of blue ball = 24 – 16 = 8