math
In how many different ways can 8 riders be matched up to 8 horses? Explain answer please.
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The answer is 40,320. This can be solved using the formula for permutations: n! / (n - r)! In this case, n is the total number of objects, which is 8, and r is the number of objects being matched up, which is also 8. This gives us 8! / (8–8)! = 8! / 0! = 8! = 40,320. This means that there are 40,320 possible ways to match 8 riders to 8 horses.
