WINTER HOLIDAY HOMEWORK [Ch.20 Q2]

Level pending

There are 7 adults, 5 children and 4 babies. In randomly choosing 12 people, what is the probability that 4 adults, 4 children and 4 babies are chosen?

A: (7P4 x 5P4 x 4P4)÷16C4

B: (7C4 x 5C4 x 4C4)÷16C12

C: (7C4 + 5C4 +4C4)÷16C12

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