Question

If an is equal to 5 - 11n and then find the common difference

Answer 1

Hope this help you ...

Answer 2

If n = 1 ;

a1 = 5-(11×1)

a1 = -6

If n = 2 ;

a2 = 5-(11×2)

a2 = -17

Now , a1=-6 & a2=-17

Hence, common difference =

d = a2-a1

= -17-(-6)

= -11