Question

Ache o sexagésimo numero natural ímpar positivo, e calcule a soma deles.

Answer 1

a1=1
a2=3
razão=2
n=60

an=a1+(n-1).r
a60=1+(60-1).4
a60=1+59.4
a60=1+236
a60=237

sn=(a1+a60).n/2
s60=(1+237).60/2
s60=238.30
s60=7140