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The tutorial discusses the concept of reordering the letters in the word "forum", which consists of four distinct letters: f, o, r, and m. It emphasizes the idea of independent events by exploring the different ways to arrange these letters. Starting with four options for the first letter, it notes that after selecting the first letter, only three letters remain for the next slot. The counting continues for subsequent letters. The tutorial illustrates the factorial approach to compute the total arrangements of the letters by considering the decreasing options available as letters are selected.