Question

Find the 7th term from the end of the AP : , 10, 13, …, 184.​

Answer 1

EXPLANATION.

• GIVEN

sequence of an Ap = 10,13,16 ............184

To find seventh term from end of an Ap.

Let the new Ap will be written as

=> 184 , 181 , 178 , ......10

First term = a = 184

Common difference = d = b - a = 181 - 184 = -3

Formula of Nth term of an Ap.

=> An = a + ( n - 1 ) d

=> T7 = a + 6d

=> 184 + 6 ( -3)

=> 184 - 18

=> 166

Therefore,

7th term of an Ap = 166