How many ways can 10 letters be posted in 5 post boxes, if each of the post boxes can take more than 10 letters ? Choose the correct choice from the following choices:
A) 5^10	B) 5^19	C) 5^18	D) 5^12	E) 5^11
Explanation:   Each of the 10 letters can be posted in any of the 5 boxes.   So, the first letter has 5 options, so does the second letter and so on and so forth for all of the 10 letters.   i.e. 5*5*5*….*5 (upto 10 times)   = 5 ^ 10.   5^10nswer: 5^10) 5^10
<result>A</result>
How many ways can 10 letters be posted in 5 post boxes, if each of the post boxes can take more than 10 letters ?