A) \[{{(mn)}^{n}}\]
B) \[{{m}^{mn}}\]
C) \[{{n}^{mn}}\]
D) None of the above
Correct Answer: C
Solution :
We have, required number of ways are\[{{n}^{mn}}\]. Since, each letter may be posted in n ways.You need to login to perform this action.
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