Two sets X and Y are said to have the same cardinality if and only if there is a one-to-one correspondence(i.e. Bijection) from X to Y. When A and B have the same cardinality, we write |X|=|Y|.
Let A and B be two sets such that . There is a one to one function from A to B.
Which of the following must be true for
S1: is onto function
S2: has an inverse
(A). Only S1
(B). Only S2
(C). Both S1 and S2
(D). None of the above