A grab bag contains 10 $1 prizes, 7 $5 prizes, and 4 $20 prizes. Three prizes are chosen at random. Find:
a) The probabilidad that exactly two $2o prizes are chosen.
b) The probability that exactly one of each type is chosen.
c) The probability that at least one $20 prize.
d) The probbility that no $1 prizes are chosen.
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Q:A grab bag contains 10 $1 prizes, 7 $5 prizes, and 4 $20 prizes. Three prizes are chosen at random. Find:
a) The probability that exactly two $20 prizes are chosen.
b) The probability that...