Practicing Success
If set A has 5 elements and set B has 7 elements than number of one-one and onto mapping from A to B is : |
2 0 1 3 |
0 |
The correct answer is Option (2) → 0 $n(A)=5,n(B)=7$ for mapping to be one one as well as onto $n(A)=n(B)$ ⇒ No mapping exist for this condition |