Question

Writes of the following A.P . Writes yes or no.
(a) 2,4,8,16........( )
(b) 0,-4, -8, -12........ ( )
(C) 2a, 3a, 4a........( )

Answer 1

Answer:

a)2,4,8,16,....

2a2=a1+a3

4×2=2+8

8 Is not equal to 10

so not in AP

b)0,-4,-8,-12,.....

2a2=a1+a3

-8=-8

In AP

c)2a,3a,4a,....

2a2=a1+a3

6a=6a

In AP