Practicing Success
Practicing Success
CUET Preparation Today
Set A has 3 elements and set B has 4 elements. The number of injections that can be defined from A to B is _____. |
| 24 |
The total number of injective mappings from a set A containing 3 elements to a set B containing 4 elements is equal to the total number of arrangements of 4 by taking 3 at a time i.e. ${^4C}_3 × 3! = 24$. |
