Question

A bag has 2 green marbles, 3 red marbles, and 3 yellow marbles. What is the probability that you pick a green marble, do not replace it, and pick another green marble?
A. 3/28
B. 1/28
C. 9/56
D. 1/8

Answer 1

what is the probability you pick a green marble first?

Answer 2

2/8 or 1/4

Answer 3

ok good
now that marble is gone
what is the probability that the second one is green given that one green marble was chosen and not replaced?

Answer 4

1/7?

Answer 5

yes

Answer 6

final answer you get via
\[\frac{1}{4}\times \frac{1}{7}\]