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3 years ago

11

A bag contains 12 blue marbles, 15 red marbles, and 13 purple marbles. If Monty randomly draws a marble from the bag (and puts i

t back) 20 times, how many times should he expect to pull a blue marble?

1 answer:

DerKrebs [107]3 years ago

7 0

Monty should expect to pull a blue marble 6 times because 12/40(20)=6

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