Question

The nth term of an AP is (7 – 4n). Find its common difference.

Answer 1

We have

T_n = (7-4n)

Common difference = T_{2 -} T₁

`T_1 = 7-4xx1=3`

`T_2 = 7- 4xx2 = -1`

d= -1-3=-4

Hence, the common difference is -4.