A = {24, 36, 48} and B = {12, 18, 24}, f : A → B. Which of the following functions is neither one-one nor onto where f : N → N?
1
f = {(24, 12), (36, 18), (48, 24)}
2
s = {(24, 24), (36, 12), (48, 18)}
3
g = {(24, 18), (36, 24), (48, 12)}
4
h = {(24, 12), (36, 18), (48, 12)}