Question

Ajutor ??? Matematica

Answer 1

a) P7 / P5 = 7! / 5! = (5!*6*7)/5! = 6*7 = 42

b) P3 = 3! = 1*2*3 = 6

A₅² = 5! /(5-2)! = 5! / 3! = (3!*4*5)/ 3! = 20

C₅³ = 5! / (3!*2!) = (3!*4*5) / (3!*2) = 2*5 = 10

6+20+10 = 36