After 3 years, how much compound interest will be obtained on Rs 7800 at the interest rate of 5% per annum?

What will be the compound interest on Rs 4000 in two years when rate of interest is 5% per annum?

What will be the compound interest on Rs 4000 in two years when rate of interest is 5% per annum?

How much compound interest is earned by investing ₹20000 for 6 years at 5% per annum compounded annually?

How much compound interest is earned by investing Rs 20 000 for 4 years at 5% per annum compounded annually. ?

How much compound interest is earned by investing ₹ 20 000 for 5 years at 5% per annum compounded annually. ?

Rs. 2500 was borrowed for 3 years. What will be the compound interest if the rate of interest for first year is 3% per annum, second year is 4% per annum and for third year is 5% per annum respectively?