Question

A bag has 4 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a red marble, do not replace it, and pick a green marble?

Answer 1

The probability of choosing red is 3/10
If you dont replace it, the denominator decreases by one and the probability of choosing a green one next is 4/9
Multiply together to get the compound probability of 12/90
Simplify to 6/45 then to 2/15