Find the compound interest earned on Rs.20000 for 2 years at 10% p.a. the interest being compounded annually.
Rs.2100
Rs.4200
Rs.6300
Rs.5600
P = 20000
T = 2 years
R = 10 %
C.I = P (1 + R/100) T -P
= 2000 [1+ 10/100]2 – P
24200 – 20000
= 4200