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Sagot :
As per the combination method, there are 120, 5 length m words can be formed from an n-letter alphabet, if no letter is used more than once.
Combination method:
in statistics, mathematical technique that determines the number of possible arrangements in a collection of items where the order of the selection does not matter is known as combination method.
Given,
Here we need to find how many length m words can be formed from an n-letter alphabet, if no letter is used more than once.
Let us consider letters (a,b,c,d,e) how many distinct n length words can be formed.
Here we note that every word can contain same letter m times at most.
So, it can be calculated as,
=> 5 x 4 x 3 x 2 x 1
=> 120
To know more about Combination method here,
https://brainly.com/question/28998705
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