Question

What is genral formula of Ap series ???

Answer 1

Arithmetic progression

an = a + (n - 1)d

where,

a is the first term

n is the number of terms

an is the nth term

d is the common difference between any two consecutive terms

___________________

Sn = n/2(2a + (n - 1)d)

where

Sn is the sum of nth term