Question

How many terms are there in the


a.p 7,13,19,25,........., 205?

Answer 1

Hey

Here is your answer,

First term, a = 7
Common difference, d = 13-7
= 6
Last term , An = 205

By using the formula,
An = a + ( n-1 ) d
205 = 7 + (n-1) 6
205-7 = (n-1) 6
198 / 6 = n-1
n-1 = 33
n = 33+1
n = 34

There are totally 34 terms.

Hope it helps you!