sameakamou5wf8 sameakamou5wf8

10-08-2017
Mathematics

contestada

Evaluate 11C7 and 12P3.

11C7= ?

12P3= ?

Respuesta :

choixongdong choixongdong

10-08-2017

11C7
= 11 x 10 x 9 x 8 x 7!/ (7!) (4! )
= (11 x 10 x 9 x 8 ) / (4 x 3 x 2 x 1)
= 7920 / 24
= 330

12P3
= 12 x 11 x 10 x 9! / (9!)
= (12 x 11 x 10)
= 1320

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