### Online Exam » Aptitude » Compond Interest

**Compond Interest :**

Money is said to be at interest when the interest is to be paid to the lender at the end of a year or other fixed period. If it is added to the end of a year or other fixed period. If it is added to the sum lent and the amount thus obtained becomes the principal for the next unit of time or the period.

After a certain period, the difference between the amount and the principal is called the compound interest.

Let principal = Rs. P, time = n and rate = R% p.a.

(a) If interest is compounded annually.

(b) If interest is compounded half-yearly :

(c) If interest is compounded quarterly :