## Sum of first n natural numbers: Formula, Examples

In this section, we will establish a few useful formulas related to the sum of natural numbers. These formulas are often used in various competitive exams. Sum of first n natural numbers: Question: What is the sum of first n natural numbers? Answer: The formula of the sum of first n natural numbers is n(n+1)/2. The … Read more

## Arithmetic Progression (AP): Sum, Formula, Nth Term, Examples

A sequence of numbers following a special pattern is usually known as a progression. The arithmetic progression is one of the examples of this kind of sequence. In this section, we will learn about arithmetic progression. What is an Arithmetic Progression A sequence of numbers is called an arithmetic progression if the differences between the … Read more