Ginger420 Ginger420

15-11-2017
Mathematics

contestada

A science teacher gives his students the choice of 7 projects. Each student has to complete 5 of the 7 projects. How many combinations of the 5 projects are possible?

Respuesta :

sgm52503 sgm52503

16-06-2018

21, 7!/5! (7-5)!=21

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