Question

If A = {l,2,3,4 }, B = {2,4, 6, 8,}, f(1) = 2, f(2) = 4, f(3) = 6 and f(4) = 8, and f : A--B then f-1 is​

Answer 1

Answer:

its answer is 2

Step-by-step explanation:

if you not know how to write it so write only 2