Question

find a common difference of an ap -1,-2,-5,-8​

Answer 1

Answer:

d=-2-(-1)=-2+1=-1

d=-5-(-2)=-5+2=-3

common difference is not same , it is not an ap

Answer 2

Answer:

-3

Step-by-step explanation:

Here, common difference (d)= -5-(-2)=-3

In order to check if it is really the answer, we would again find d by using the other terms of AP,

d= -2-(1) = -3

Hence, solved.