Genetics: Permutations are used in genetics to analyze gene sequences and explore the possibilities of genetic combinations.Permutations find applications in various disciplines, showcasing their importance beyond mathematics. 4! / (4 - 3)! = 4! / 1! = 4 x 3 x 2 x 1 / 1 = 24 / 1 = 24 Therefore, there are 24 possible three-number permutations without repetition.Substitute the values into the formula:.(n - r)! represents the factorial of the difference between the total number of items and the number of items to select.n! represents the factorial of the total number of items.
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