Question

is this sequence is in A. P.?
if yes find common difference

5,10,15,20....​

Answer 1

Yes this is an Ap

Common Difference=10-5=5

Answer 2

Answer:

Given sequence → 5,10,15,20---

Here,

t1 = 5

t2 = 10

t3 = 15

t4 = 20

d = t2 - t1 = 10 - 5 = 5

Difference between 2 terms is constant, therefore it is a A.P.

Hope it is helpful.