Question

Find the Nth term of the following sequence...

7, 27, 47, 67, .....

Answer 1

Arithmetic series which we are adding 20 to get next term.

Explicit formula for arithmetic series is:
$A_n = A_1 + d(n-1)$
d =20
a1 = 7

Answer 2

Use the formula an=a1+d(n-1).
an=20n-13