SOLUTION: Using the letters from the word “PHYSICAL”, how many 3 - letter codes can be formed if repetition is allowed?

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Question 1192091: Using the letters from the word “PHYSICAL”, how many 3 - letter codes can be formed if repetition is allowed?
Answer by ikleyn(52777) About Me  (Show Source):
You can put this solution on YOUR website!
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There are 8 different letters.

So,   8*8*8 = 512   three-letter codes can be made,  if repeating is allowed.

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See the lesson
    - Combinatoric problems for entities other than permutations and combinations
in this site.  Find there many solved similar problems and learn the subject from there.

Also,  you have this free of charge online textbook in ALGEBRA-II in this site
    - ALGEBRA-II - YOUR ONLINE TEXTBOOK.

The referred lesson is the part of this online textbook under the topic  "Combinatorics: Combinations and permutations".


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Free of charge online textbook in ALGEBRA-II
https://www.algebra.com/algebra/homework/complex/ALGEBRA-II-YOUR-ONLINE-TEXTBOOK.lesson

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