Question

A box contains 12 red marbles,8 blue marbles, and 4 yellow marbles. Three marbles are drawn at random with replacement (means I put the marble back in before choosing again). What is the probability of getting 3 reds

Answer 1

Answer: 1/8

Explanation:

Number of red marbles = 12

Number of blue marbles = 8

Number of yellow marbles = 4

Total number of marbles = 24

Probability of getting red = 12/24 = 1/2

The probability of getting three reds with replacement will be:

= 1/2 × 1/2 × 1/2

= 1/8