Question

A bag contains 3 red marbles, 5 yellow marbles, and 4 blue marbles. One marble is chosen at random. What is the probability that the chosen marble will be blue?
a. 1/12
b. 1/4
c. 1/3
d. 3/4

Answer 1

1/3 because there's 4 blue marbles in a bag of 12 marbles so as a fraction that would be 4/12 cancelled down = 1/3