## Arithmetic Progression

A sequence is a set of numbers arranged in a definite pattern. Each number is called a term.

A finite sequence is one that has a last term when listed. For Example: 2,4,6,8,,…,16. An infinite sequence is one that does not have a last term when listed.

Arithmetic Progression follows the rule of linear sequence which is the sequence in which each term is obtained by adding a distant number (Positive or Negative) to the proceeding terms.

The constant number is called common difference and it is denoted as “d” while the first term is denoted as “a”.

If T1, T2, T3, T4, T5, … is a linear sequence, the common difference is obtained as:

# What is Simple Interest?

Simple interest is a method of calculating the interest charge on a loan or bill. Simple interest is determined by multiplying the interest rate by the principal by time which is normally in years (per annual) but could be in months, days, weeks etc during the specified time frame.

Simple Interest (S.I.) = (P x r x t) / 100

Where P stands for Principal, r stands for interest rate and t stands for time.

## How to Solve and Apply Simple Interest.

There are a number of different reasons that could make one want to carry out a simple interest operation. One of them being that you want to lend money to your friend to start a business and you want your money to work for you and reproduce during the course of the loan.