Find the C.I. on a sum of Rs.1800 for 6 months at 20% per annum, interest being compounded quarterly?  Options.
A) 792  B) 892  C) 8920  D) 802  E) 9920
8920.I.= 1800(21/20)^2-1800   = 792   Answer: 8920
<result>C</result>
Find the C.I. on a sum of Rs.1800 for 6 months at 20% per annum, interest being compounded quarterly?