\( 1 \leftarrow \quad \) There are 60 runners in a race. How many ways can the runners finish first, second, and third?
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To determine the number of ways the runners can finish first, second, and third, we can think of this as a permutation problem where we want to arrange 3 out of 60 runners. The number of ways to choose 3 runners from 60, and arrange them in order, is given by the formula for permutations: \[ P(n, r) = \frac{n!}{(n - r)!} \] In this case, \(n = 60\) (the total number of runners) and \(r = 3\) (the positions we care about: first, second, and third). So, we calculate: \[ P(60, 3) = \frac{60!}{(60 - 3)!} = \frac{60!}{57!} = 60 \times 59 \times 58 \] Now let's perform the multiplication: \[ 60 \times 59 = 3540 \] \[ 3540 \times 58 = 205320 \] Thus, the number of ways the runners can finish in the top three positions is \(205320\).