A) \[\frac{n\,!}{(n-m)\,!\,{{m}^{n}}}\]
B) \[\frac{n\,!}{(n-m)\,!\,{{n}^{m}}}\]
C) \[\frac{m\,!}{(n-m)\,!\,{{n}^{m}}}\]
D) \[\frac{m\,!}{(n-m)\,!\,{{m}^{n}}}\]
Correct Answer: B
Solution :
As we know the total number of mappings is \[{{n}^{m}}\] and number of injective mappings is \[\frac{n\,\,!}{(n-m)\,!{{n}^{m}}}\].You need to login to perform this action.
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