Question

Joe wants to get bonus points on a test by
explaining how to find the probability of first
selecting a red marble from a jar, not returning it,
and then selecting a blue marble from the jar. If the
jar of 10 marbles contains 1 blue marble, 2 white
marbles, 3 green marbles, and 4 red marbles, what
is the actual probability of the even occurring?

Answer 1

what is the total possible outcome?