Sum of the first n terms -l plss say dont spam Ii will report
Answer»
The sum of n TERMS of AP is the sum(ADDITION) of first n terms of the ARITHMETIC sequence. It is equal to n divided by 2 times the sum of twice the first term – 'a' and the product of the DIFFERENCE between second and first term-'d' also known as common difference, and (n-1), where n is numbers of terms to be added.