Question

Decide whether given sequence is an AP or not 2, -2, -6, -10,---​

Answer 1

Answer:

yes

Step-by-step explanation:

common difference is -4

Answer 2

2,-2,-6,-10
To check if this sequence is AP or not
a=2. d= a2-a1 = -2-(2). = -4
A2 = a+d
-2= 2+(-4)=-2
A3=a+2d = 2+2(-4)=2+(-8)
-6=-6
A4=a+3D = 2+3(-4)= 2+(-12)
-10=-10
So this is an AP since d is same
Or
A2-a1= -2-2=-4
A3-a2= -6-(-2)=-4
A4-a3= -4
Since d is same so this is an AP