1. In how many ways can 7 cars be parked if there are 10 available parking spaces? Given: n = 10 r= From: $P(n,r) = \frac{n!}{(n-r)!}$ ; then, $P(10, \_) = \frac{10!}{(10- \_)!}$ $P(10, \_) = \_\_\_\_$ 2. In how many ways can 6 people arrange themselves in a row for picture
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This can be calculated using the formula for permutations: P(10,7) = 10! / (10-7)! = 10! / 3! Show more…
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