Question

Calcule o 31 termos e o 100 termos da PA (3,5,7..)

Answer 1

a31=a1+30.r           a100=a1+99r                 r=5-3=2
a31=3+30.2            a100=3+99.2
a31=3+60               a100=3+198
a31=63                   a100=203

Answer 2

a31=3+30.2
a31=3+60
a31=63

a100=3+99.2
a100=3+198
a100=201