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