If a man invests ₹12000 for two years at the rate of 10% per annum compound interest, then the compound interest earned by him at the end of two years is

1. ₹2400

2. ₹2520

3. ₹2000

4. ₹1800

Mr. Rao bought 1-year, ₹10000 certificate of deposit that paid interest at an annual rate of 8% compounded semi-annually. The interest received by him on maturity is

1. ₹816

2. ₹864

3. ₹800

4. ₹10816

If the number of conversion periods ≥ 2, then the compound interest is

1. less than simple interest

2. equal to simple interest

3. greater than or equal to simple interest

4. greater than simple interest

The present population of a city is 12,00,000. If it increases at the rate of 8% every year then the population of the city after 2 years is

1. 199680

2. 1399680

3. 1500000

4. 1299680