Q. The compound interest on Rs. 10000 in 2 years at 4% per annum, the interest being compounded half-yearly, is:
Answer: Rs. 824.32
Notes: $latex A=10000\left ( 1+\frac{2}{100} \right )^{4}&s=1$ $latex =>10000\left ( \frac{51}{50} \right )^{4}&s=1$ $latex =>10000\left ( 1.08243216 \right )=10824.3216$ Since Interest = 10824.3216 - 10000 = Rs.824.32 Hence option [C] is the right answer.

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