Question

if p,q and r are three consecutive terms of an AP whose common difference is d then the value of r-p ​

Answer 1

Step-by-step explanation:

q-p=d

r-q=d

adding both of them

r-p=2d

Answer 2

Given,
p,q,r are in Ap

So ,
r-q=d,q-p=d
Add both the equations
r-q+q-p=d+d
r-p=2d

.: r-p=2d