Arrangements and Selections

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Certificado Júnior Strand 1 - Nível Superior - Probabilidade e Estatística

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# Arrangements and Selections

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• Nota de Estudos
• Rever Tópicos
 Sarah O. 0 0 where did she get 56 from?
 Sarah O. 0 0 how did you get 56?
 Kushal G. 0 0 @lanigutteridge they refereed to a table
 Lani G. 0 0 how do you get 56?
 Bujjibabudora P. 0 0 good
 Naveena G. 0 0 Rosalie: it is 8!/(8-5)!5!.. hope this helps
 Danisile Ennie K. 0 0 wow l got it.
 Sara S. 0 0 I didn' t understand how you got 56 :/
 WILLIAM H. 1 0 n C r = n! / ((n - r)! * r! ). Given n=8 and r=5 you get 8! / ((8-5)! * 5!) = 8! / 3! * 5! = 8*7*6 / 3*2 with the 5! cancelling out on top and bottom. That yields 8*7*6/6 = 56.
 Amna J. 0 0 Good
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