Question

calcule a soma dos 24 primeiros termos de cada PA: (3,33,63)​

Answer 1

Resposta:

R=30

a1=3

n=24

an=a1+(n-1).r

an=3+(24-1).30

an=3+23.30

an=3+690

an=693

Sn=n(a1+an)/2

Sn=24(3+693)/2

Sn=24.696/2

Sn=24.348

Sn=8352