A catering service offers 10 appetizers, 11 main courses, and 3 desserts. A customer is to select 6 appetizers, 8 main courses, 2 and desserts for a banquet. In how many ways can this be done

Question

Huber

Business

18 December, 20:18

A catering service offers 10 appetizers, 11 main courses, and 3 desserts. A customer is to select 6 appetizers, 8 main courses, 2 and desserts for a banquet. In how many ways can this be done

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Answers (1)

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Alena Wood · Answer 1

13,860 possible combinations

Explanation:

If you have 10 appetizers, 11 main courses and 3 desserts from which to choose from, and you can only select 6 appetizers, 8 main courses and 2 desserts, you can choose this may combinations:

= [8! / 6! (8 - 6) !] x [11! / 8! (11 - 8) !] x [3! / 2! (3 - 2) !]

11! = 11 x 10 x 9 x 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 39,916,800 8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 40,320 6! = 6 x 5 x 4 x 3 x 2 x 1 = 720 3! = 3 x 2 x 1 = 6 2! = 2 x 1 = 2

= [40,320 / 720 (2) ] x [39,916,800 / 40,320 (6) x [6 / 2 (1) ]

= (40,320 / 1,440) x (39,916,800 / 241,920) x 3

= 28 x 165 x 3 = 13,860