Question

Exit A bag contains 4 red marbles and 5 blue marbles. If two marbles are chosen at random, one at a time and without replacement, what is the probability of getting two red marbles?

Answer 1

4 red, 5 blue...total of 9

P(red) = 4/9
without replacement
P(red) = 3/8

P(2 reds) = 4/9 * 3/8 = 1/6 <==