SOLUTION: a bag contains 8 red marbles, 7 blue marbles, and 5 green marble. Two marbles are randomly selected from the bag, what is the probability that both are NOT blue?

Question 843356: a bag contains 8 red marbles, 7 blue marbles, and 5 green marble. Two marbles are randomly selected from the bag, what is the probability that both are NOT blue?
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Let's find the probability that both are blue since P(both blue)+P(both not blue)=1.
I'm assuming it's without replacement.

and the second,

So then

So then the probability we want is,

RELATED QUESTIONS
A bag contains 9 red marbles, 8 blue marbles, and 6 green marbles. What is the... (answered by richwmiller)

A bag contains 6 red marbles, 3 blue marbles, and 7 green marbles. If a marble is... (answered by checkley77)

A bag contains 2 red marbles, 3 blue marbles, and 7 green marbles. If a marble is... (answered by Alan3354)

A bag contains 5 green marbles, 4 red marbles, 7 blue marbles, and 9 yellow marbles.... (answered by oscargut)

) Bag 1 contains 12 green marbles, 5 blue marbles, and 3 yellow marbles. Bag 2 contains 8 (answered by checkley71)

A bag contains 2 red marbles, 3 blue marbles, and 5 green marbles. If a marble is... (answered by rothauserc)

A bag contains 5 blue marbles, 6 red marbles, and 9 green marbles. Two marbles are drawn... (answered by stanbon)

A bag contains 8 red marbles, 7 blue marbles, 10 white marbles and 9 yellow marbles. You... (answered by ewatrrr)