Question

John had 8 marbles and 4 red marbles in the bag. He took 1 marble from the bag and then replaced it and then took a second marble. What is the probability that john gets a red marble and then a red marble again?

A: 1/9

B: 3/4

C: 1/3

D: 1/11

Answer 1

1/4

Explanation:

P(red,red) = 4/8 x 4/8 = 1/2 x 1/2 = 1/4