What would be the difference between the simple interest and the compound interest on a sum of money at the end of four years ? I. The rate of interest is 5 p.c.p.a. II. The sum fetches a total of ` 2000 as simple interest at the end of 8 years. III. The difference between the simple interest and the compound interest at the end of 2 years is ` 12.50.
(a)II only
(b)III only COMPOUND INTEREST 683
(c)I and III only
(d)Either II or III only All I, II and III are required
(e)Any two of the three None of these 26. What is the rate of interest per annum?