a box contains the following mixture of colored marbles 2 black, 3 red, 5 yellow, and 2 green. If two marbles are drawn, the second being drawn n after the first is replaced, then what is the probability that both are black?

2 answers

(2/12)^2 = ?
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.