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22-04-2018
Mathematics

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How many different ways can a director select 4 actors from a group of 20 actors?

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Аноним Аноним

22-04-2018

Number of ways = 20C4
Number of ways = (20 x 19 x 18 x 17) ÷ (4 x 3 x 2 x 1)
Number of ways = 116280 ÷ 24
Number of ways = 4845.

Answer: 4845

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