A) \[{{5}^{6}}\]
B) \[{{6}^{5}}\]
C) \[5!\]
D) \[6!\]
Correct Answer: A
Solution :
Since, each letter can be posted in any one of the five different letter boxes, So, a letter can be posted in 5 ways. Since, there are six letters and each can be posted in 5 ways. So, total numbers of ways \[=5\times 5\times 5\times 5\times 5\times 5={{5}^{6}}\]
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