Find the compound interest on $10000 in 2years at 4% per annum, the interest being compounded half-yearly?  Choices:
A) $645.56	B) $824.32	C) $954.26	D) $745.69	E) $1020.45
Principle = $10000   Rate = 2% half yearly = 4 half years   Amount = 10000*(1 + 2/100)^4 = 10000 * 51/50 * 51/50 * 51/50 * 51/50   = $10824.32   C.I. = 10824.32-10000= 
<gadget id="calculator">10824.32-10000</gadget>
<output>824.32</output>
$824.32   Answer is $824.32
<result>B</result>
Find the compound interest on $10000 in 2years at 4% per annum, the interest being compounded half-yearly?