Question

The sum of the first five terms of an ap is 55 find the sum of the first n terms of the ap is 235 find the sum of the first 20 terms

Answer 1

Answer:

Step-by-step explanation:https://www.topperlearning.com/doubts-solutions/the-sum-of-the-first-five-terms-of-an-ap-and-the-sum-of-first-seven-terms-of-the-same-ap-is-167-if-the-sum-of-the-first-ten-terms-of-the-ap-is-235-fin-g4tcegyy