Q. A sum becomes Rs. 1352 in 2 years at 4% per annum compound interest. The sum is :
Answer: Rs. 1250
Notes: Let the sum be Rs. x $latex \therefore 1352=x\left ( 1+\frac{4}{100} \right )^{2}&s=1$ $latex =>1352=x\left ( 1+\frac{1}{25} \right )^{2}&s=1$ $latex =>1352=x\left ( \frac{26}{25} \right )^{2}&s=1$ $latex =>x=\frac{1352\times 25\times 25}{26\times 26}&s=2$ $latex =>x=Rs. 1250$ Hence option [A] is the right answer.

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