Question

Calcule.
a}A4,3=

b}A5,2=

Galera Pfv Min Ajudem Aih

Answer 1

a}A4,3=4!/(4-3)! =4!/1!=4!=4*3*2*1=24

b}A5,2=5!/(5-2)! =5!/3!=5*4*3!/3!=5*4=20