Question

A box 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. The number of blue balls in the jar is:

Options

• 13

• 12

• 16

• 8

Answer 1

8

Explanation:

Total number of marbles = 24

probability of picking green marbles = `2/3`

probability of picking blue marbles = `1 - 2/3 = 1/3`

`1/3 = "x"/24`

x = 8