Posted by juju on .
an urn contains 6 purple marbles and 4 pink marbles. a marble is drawn at random and not replaced. then a second marble is drawn. what is the probability that both marbles are purple?

math 
PsyDAG,
If the events are independent, the probability of both/all events occurring is determined by multiplying the probabilities of the individual events.
6/10 * 5/9 = ?