If Subba Rao started work in 1995 at an annual salary of Rs.5000 and received an increment of   Rs.200 each year.

Here a = 5000, d = 200, 

A) a + (n – 1)d = 7000

     5000 + (n – 1)200 =7000

       $n-1=\frac{7000-5000}{200}$

            $n=10+1$

            $n=11$

B) Here n = 20, 

C) Here n = 26, 

D) Here  n = 30,