Question

If the common difference of an A.P is "d" than a3-a1=a

Answer 1

The common difference is 0..
because A2=A1..

Answer 2

Answer:

i think the answer is 2d

Step-by-step explanation:

a2-a1=d

=a1=a2-d

a3-a1

=a3-(a2-d)

a3-a2+d

=d+d

=2d