Question

A bag has 5 red marbles, 6 blue marbles and 4 black marbles. What is the probability of picking a blue marble, replacing it, and then picking a red marble?

A) 8/75
B) 3/5
C) 2/15
D) 4/45

Answer 1

Probability of picking a blue marble : 6 / 15 = 2/5
Probability of picking a red marble: 5 / 15 = 1/3
2/5 * 1/3 = 2/15
Answer: C ) 2/15