SOLUTION: How many different arrangements of 5 letters can be formed if the letter must be W or K (repeats of letters are allowed)?

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Question 1071124: How many different arrangements of 5 letters can be formed if the letter must be W or K (repeats of letters are allowed)?
Answer by ikleyn(52803) About Me  (Show Source):
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Answer. 2%5E5 = 32 different arrangements.

Indeed, there are 2 possibility for the first letter from the left.

Then there are 2 possibilities for the second letter.

Then . . . . and so on till the 5-th letter.

In this way you will get all 2%5E5 arrangements.

Each is unique, and each is achievable in this way.

There is no other arrangements.