Question

The expression ,C, is equivalent to9!1) ,P22) „P, 3) ,C, 4)기

Answer 1

C

1) Considering that the Combination formula, then we need to plug that into and then solve it

2) Examining the options: Permutation formula:

Note that these are the formulas for Combination and Permutation. When we plugged that into the formula, we can conclude that the answer is C