There are 5 red marbles, 15 blue marbles, and 5 green marbles in a bag. If you reach in and randomly draw two marbles without replacing the first, what is the probability that both will be blue?
A.8/15
B.3/5
C.19/49
D.7/20

Answer :

b because 15 + 5 + 5 = 25. 100/25 = 4. 

blue = 15/25, simplified is 3/5.
I think it's B because there are more blue marbles

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