Looks like the order is important, so
prob(as stated) = (3/12)(5/11)(4/10) = ....
a jar of marbles contains 3 red marbles 5 blue marbles 4 green marbles someone take 3 marbles from the jar one at a time without replacement what is the probability that someone picks a red marble then a blue marble then a green marble?
2 answers
3/12 * 5/11 * 4/10 = ?