Question

Let A = {1, 2, 3), B = {4, 5, 6, 7} and let f = {(1, 4), (2, 5), (3, 6)} be a function from A to B. Based on the given information, f is best defined as​

Answer 1

f is one-one

because f(1) = 4 ; f(2) = 5 ; f(3) = 6

No two elements of A have same f image.