SOLUTION: Suppose a jar contains 5 red marbles and 12 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.

Algebra ->  Probability-and-statistics -> SOLUTION: Suppose a jar contains 5 red marbles and 12 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.      Log On


   



Question 1145305: Suppose a jar contains 5 red marbles and 12 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Suppose a jar contains 5 red marbles and 12 blue marbles. If you reach in the jar and pull out 2 marbles at random at the same time, find the probability that both are red.
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17 total marbles
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The 1st pick is 5/17, then 2nd is 4/16
The product is 5/68
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Makes no difference if you take 2 at a time, or 2 different choices WITHOUT replacement.