(1). The difference between the simple interest on a certain sum at the rate of 10% per annum for two years and compound interest which is compounded every six months is Rs.124.05. What is the principal sum?

• (a). Rs.8000
• (b). Rs.5000
• (c). Rs.15200
• (d). Rs.2500
• (e). None of these

(2). On a sum of money, the simple interest for two years is Rs.630, while the compound interest is Rs.661.5. The rate of interest being the same in both the cases. The rate of interest is?

• (a). 16%
• (b). 12%
• (c). 15%
• (d). 10%
• (e). None of these

(3). A bank offers 5% compound interest calculated on half-yearly basis. A customer deposits Rs. 1600 each on 1st January and 1st July of a year. At the end of the year, the amount he would have gained by way of interest is:

• (a). Rs. 120
• (b). Rs. 121
• (c). Rs. 123
• (d). Rs. 122
• (e). None of these

(4). There is 80% increase in an amount in 8 years at simple interest. What will be the compound interest of Rs. 14,000 after 3 years at the same rate?

• (a). Rs.3794
• (b). Rs.3714
• (c). Rs.4612
• (d). Rs.4634
• (e). None of these

(5). The difference between simple and compound interests compounded annually on a certain sum of money for 2 years at 4% per annum is Re. 1. The sum is:

• (a). Rs.600
• (b). Rs.645
• (c). Rs.525
• (d). Rs.625
• (e). None of these