Question: A reminder of notation: [n] = {1,...,n}, for an integer n > 0. (a) What is the number of 4-sequences without repetitions of the elements

A reminder of notation: [n] = {1,...,n}, for an integer n

A reminder of notation: [n] = {1,...,n}, for an integer n > 0. (a) What is the number of 4-sequences without repetitions of the elements of 6)? Give a calculation that produces a numeric

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