Question

A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn at random. What is the probability of first drawing a blue marble and then, without replacing it, drawing a red marble?
A.9/20
B.3/38
C.1/19
D.11/20

Answer 1

first: 5/20
second: 6/19

5/20 x 6/19 = 30/380 = 15/190 = 3/38. The answer is B