How to find the sum of an arithmetic progression (AP) in Class 11 Maths?
The sum of the first n terms of an arithmetic progression (AP) can be calculated using the formula $S_n=\frac {n}{2}(2a+(n−1)⋅d)$, where a is the first term, d is the common difference, and n is the number of terms.
This formula helps in finding the total sum of terms when you know the starting term and the common difference between consecutive terms.