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3 years ago

There are 56 runners in a race. How many ways can the runners finish first, second, and third?

Mathematics

1 answer:

Rus_ich [418]3 years ago

3 0

$\bf \stackrel{permutation}{_nP_r=\cfrac{n!}{(n-r)!}}\qquad \qquad _{56}P_3=\cfrac{56!}{(56-3)!}$

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mezya [45]

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Combine like terms.

3x + 93 = 180

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3x = 87

Divide both sides by 3

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3 years ago

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IrinaK [193]

Answer:

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Step-by-step explanation:

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3 years ago

What is the right way to use substitution method?

Kazeer [188]

Answer:

Step-by-step explanation:

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3 years ago

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Gennadij [26K]

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3 years ago

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Answer:

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3 years ago