Repetition is often used in poems for effect, either to get a point across, emphasize something, or signal distress/tension, but it depends on what is being repeated.
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Be cautious of word repetition unless it is used as a tool to create impact.
With repetition, there are 86 ( = 262144) such numbers. Without repetition, there are still 8!/2! = 20160.
Assuming you meant the largest 3 digit number without repetition:Largest 4 digit without repetition = 9876Largest 3 digit = 987⇒ difference = 9876 - 987 = 8889
How many three-letter "words" can be made from 10 letters "FGHIJKLMNO" if repetition of letters are not allowed
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