Question

a,a square,a cube ,a four find the common difference

Answer 1

Solution :
the given series is in Geometric progression

with first term = a
and common difference = a

Hope that helps !!!!

Answer 2

(xi) a, a2, a3, a4 …

Here,

a2 - a1 = a2 - a = (a - 1)

a3 - a2 = a3 - a2 = a2 (a - 1)

a4 - a3 = a4 - a3 = a3(a - 1)

⇒ an+1 - an is not the same every time.