Question

Calcule a espressāo: URGENTE
A10,7 - A8,3
A9,6 + A6,2

Answer 1

An,p=n!/(n-p)!

A10,7 - A8,3= 604.800 - 336= 604.464

A10,7=10!/(10-7)!=10!/3!= 10*9*8*7*6*5*4*3!/3!=10*9*8*7*6*5*4=604.800
A8,3= 8!/(8-3)!= 8!/5!= 8*7*6*5!/5!=8*7*6=336



A9,6 + A6,2=60.480-30=60.450

A9,6=9!/(9-6)!= 9!/3!= 9*8*7*6*5*4*3!/3!=9*8*7*6*5*4=60.480

A6,2=6!/(6-2)!= 6!/4!= 6*5*4!/4!=6*5=30