AoPS Wiki:Problem of the Day/September 1, 2011
< AoPS Wiki:Problem of the Day
Revision as of 16:54, 15 April 2020 by Vsampa5854 (talk | contribs)
In how many ways can the letters in the word "hair is on my head" be arranged if exactly one of the following criteria must be met:
1) The two a's are NOT next to each other.
2) The t to each other.
3) No a is next to an m.
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