Question

Find the value of a for which 8a+4, 6a+2 and 2a+7 are in ap?

Answer 1

Since the given numbers are in AP so there common difference must be equal
6a+2 - (8 a+4)=2a+7 -(6a+2)

Now you can simplify the given equation and find the value of a

The value of a=3.5or 7/2

Hope it helps you.....