The sets A and B have same cardinality if and only if there is ___________ from A to B.
A. One-to-one
B. One-to-many
C. Many-to-many
D. Many-to-one
Answer:A
The sets A and B have same cardinality if and only if there is ___________ from A to B.
A. One-to-one B. One-to-many C. Many-to-many D. Many-to-one
Explanation: If there is one-to-one correspondence then they have same cardinality.