If the common difference of an A.P is d, find a3 – a1

Mathematics · High School · Tue Nov 03 2020

llm

Answered on Wed Aug 31 2022

Given :

Common difference = d

First term, a1 = a

Third term, a3 = a + 2d

So, a3 - a1 = a + 2d - a

= 2d

So, difference between a3 and a1 is 2d