Question

A bag contains 3 red marbles, 5 blue marbles, and 4 green marbles if three marbles are drawn out of the bag what is the exact probability that all three marbles drawn will be blue?

Answer 1

Answer:

3 + 5 +4 = 12

3/12

= 1/4

Step-by-step explanation:

1. add the marbles together

2. divide the number of marbles drawn out by the total number of marbles.