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About Compound Interest MCQs

Questions here use the formula A = P(1 + r/100)^n and its variations. You will find items on finding the rate at which Rs. 1200 becomes Rs. 1348.32 in two years, the difference between simple and compound interest over two or three years, and comparing yearly with half-yearly compounding. Some are data sufficiency questions, asking which statements are enough to find the compound interest. A useful shortcut is that for two years, CI minus SI equals P(r/100) squared, which saves time in exams.

Exams that include Compound Interest MCQs

Pakistan

  • NTS
  • PPSC
  • FPSC
  • Banking job tests

India

  • IBPS PO
  • IBPS Clerk
  • SBI PO
  • SSC CGL
  • RRB NTPC

Bangladesh

  • Bank job exams
  • Bangladesh Bank recruitment
  • BCS

Frequently asked questions

What is the formula for compound interest?

The amount is A = P(1 + r/100)^n, where P is the principal, r the annual rate and n the number of years. Compound interest is A minus P. For half-yearly compounding, halve the rate and double the number of periods.

What is the difference between simple and compound interest for two years?

For two years, compound interest exceeds simple interest by P(r/100)^2. For example, on Rs. 5,000 at 10 per cent, the difference is 5,000 x 0.01, which is Rs. 50. For three years, the difference is P(r/100)^2 multiplied by (3 + r/100).

Last reviewed October 2026