Question

A jar contains 24 marbles, some are green and others are blue. If a marble is drawn at random from the jar, the probability that it is green is `2/3`. Find the number of blue balls in the jar.

Answer 1

total no of marbles = 24
let green marbles be x
let blue marbles be `24-x`
let g be the event of taking out green marble
no of favourable outcomes`= x`
`P(g) = x/24= 2/3`
`x= 2/3*24=16`
no of green marble = 16
no of blue marble = 8 answer