SEQUENCE AND SERIES - 3

The 1st term of arithmetic progression is 7 and the common difference is 40. Find the nth term

solution

A1=7, d= 40, n=?

An =A1 + (n-1) d

An=7 + (n-1)40

An=7 + 40n -40

An=40n + 7-40

An=40n – 33

Hence the nth term is An=40n – 33