Answer :
1728 three-letter code words can be constructed from the first twelve letters of the Greek alphabet if repetitions is allowed
What is meant by Repetition?
Repetition: The act of repeating, or doing, saying, or writing something again; repeated action, performance, production, or presentation. repeated utterance; reiteration. something made by or resulting from repeating.
it is asked to find how many three-letter code words can be constructed from the first twelve letters of the Greek alphabet if repetitions is allowed
if repetitions are allowed then there is chance for every alphabet to repeat
i.e., 12x12x12=1728
1728 three-letter code words can be constructed from the first twelve letters of the Greek alphabet if repetitions is allowed
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