Question

A bag contains 3 blue marbles and

4 yellow marbles. You pull out one
marble, do not replace it, and then pull
out another one. What is the probability
that the first marble is yellow and the
second one is blue? In simplest form

Answer 1

2/7

Explanation:

Probabilty 1 = 4/7

Probability 2 = 3/6 = 1/2 (because if you not replace it, there is one less

final probability = 4/7 * 1/2 = 4/14 = 2/7