Question

A father has 9 children. He takes 3 children at a time to a park as after as he can without taking the same 3 children more than once. How often he can go to the park?

• A. 24
• B. 80
• C. 84
• D. 28

Answer 1

Answer: (C)

84

Answer 2

$9C_{3} = 84$