Question

find the number of terms in AP 7,13, 19..... 205​

Answer 1

Answer:

Hey there !!

A.P. 7 , 13 , 19 , ...... , 205

a = 7

d = 13 – 7 = 6

An = 205

As we know,

An = a + (n–1) d

205 = 7 + (n–1) 6

=> 205 – 7 = (n–1) 6

=> 198 = (n–1) 6

=> n–1 = 198 / 6

=> n–1 = 33

=> n = 33 + 1

=> n = 34

Thus, total no. of terms is 34

Answer 2

Answer:

Here is the solution

Hope this helps u