Probability with Combinations and Permutations Answers

A bag contains eight yellow marbles, nine green marbles, three purple marbles, and five red marbles. Two marbles are chosen from the bag. What expression would give the probability that one marble is yellow and the other marble is red?P(Y and R) = P(Y and R) = P(Y and R) = P(Y and R) =

What is the probability that the lock code will not contain the number 0? [___].