You have a bag of 15 marbles. 8 are red. 5 are blue. 2 are green. If you pull out two marbles without replacement, what is the probability that one, but not both, of them, will be blue? a
33.3%
b
57.1%
c
66.6%
d
47.6%

Step-by-step explanation:

There are two possible scenarios

1. First marble is blue and second marble is not blue:

2. First marble is not blue and second marble is blue:

The probability that one, but not both, of them, will be blue:

Correct option is D

341

step-by-step explanation:

all you have to do is 9x31 (which equals 279) and then 20x31 (which equals 620). then you have to subtract. 620-279=341.