Question

A 7term of ap is 40 the sum of first 13 term is 520

Answer 1

Answer:

Given: seventh term of an AP = 40

To find: Sum of first 13 terms.

Let, a be the first term and d be the common difference.

We know that,

a + ( 7 - 1 )d = 40

a + 6d = 40

Also,

Therefore, Sum of 13 terms is 520.

hope it help u

by

Akshat Paliwal

Step-by-step explanation: