Question

Hi the answer is 5 but i dont understand. Sorry its not in english i just found a random math task

Answer 1

Explanation:

f(2) = 3 and f(3) = 4, therefore:

fof(2) = f(f(2))

= f(3)

= 4

f(4) = 1, therefore:

f(4) + (fof)(2) = 1 + 4

= 5