Let be an alphabet, and let denote the number of appearances of

letter in a word. How many words of length n in the alphabet A are there for which

and is even?

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- October 20th 2012, 05:45 AMmaximus101Combinatorics QUESTION 2-3
Let be an alphabet, and let denote the number of appearances of

letter in a word. How many words of length n in the alphabet A are there for which

and is even? - October 20th 2012, 05:14 PMchiroRe: Combinatorics QUESTION 2-3
Hey maximus101.

Can you show us what you have tried? Is a word just a string of the same letter? If you have to have a separator between the words thn gives a hint of the upper limit of words.