Question

I can’t seem to find the value of n in this peoblem

Answer 1

i think the value of n is 12

Answer 2

9

Explanation:

you can always use guess-and-check:

124 seems rather high

(6)P(2) = 6!/4! = 6x5 ≠ 72

(9)P(2) = 9!/7! = 9x8 = 72