Question: Exercise 8.24. How many functions are there from {1,2,3} to {1,2,3}? For nEN, how many functions are there from {1,2,...,n} to {1,2,...,n}? How many

Exercise 8.24. How many functions are there from {1,2,3} to {1,2,3}? For

Exercise 8.24. How many functions are there from {1,2,3} to {1,2,3}? For nEN, how many functions are there from {1,2,...,n} to {1,2,...,n}? How many bijections are there from {1, 2,...,n} to {1,2,...,n}?

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