A) \[{{(mn)}^{n}}\]
B) \[{{m}^{mn}}\]
C) \[{{n}^{mn}}\]
D) None of these
Correct Answer: C
Solution :
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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