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Matt has a bag containing 12 green marbles and 8 blue marbles. Without looking, he pulls out one marbles and places it on the table. He then picks a second marbles from the bag. What is the probability he will have 2 blue marbles?
11 years ago

Answers

Brainiac
Probability= action×action

P= 8/20 × 7/19 (because one blue is gone)
P= 56/380
P= 14/95
11 years ago

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