Question

Determinar o 51° termo da P.A (4,10,16,22,...)

Answer 1

an = a1 + ( n - 1 ).R
A 51 = 4 + (50×6)
A51 = 4 + 300
A51 = 304

Answer 2

an=a1+(n-1)*r
an=4+(51-1)*6
an=4+50*6
an=4+300
an=304