Question

In an A.P an=2n-1 and an+1=2n+1. Its common difference is…………​

Answer 1

$an = 2n - 1$

and

$an+1=2n+1$

So ,

COMMON DIFFERENCE =

$(an + 1) - an$

$(2n + 1) - (2n - 1)$

$2n + 1 - 2n + 1$

cancelling (+ 2n) and (-2n)

$1 + 1$

$2$

2 is the common difference .