Q12Multiple choice
Let X = {1, 2, 3}and Y = {4, 5}. Find whether the following subsets of X ×Y are functions from X to Y or not.
- (i)f = {(1, 4), (1, 5), (2, 4), (3, 5)}
- (ii)g = {(1, 4), (2, 4), (3, 4)}
- (iii)h = {(1,4), (2, 5), (3, 5)}
- (iv)k = {(1,4), (2, 5)}.