Question

How to do sum of n terms in Arthematic progression?

Answer 1

Sum of the First n Terms of an Arithmetic Sequence - Varsity Tutors Sum of the First Terms of an Arithmetic Sequence. Suppose a sequence of numbers is arithmetic (that is, it increases or decreases by a constant amount each term), and you want to find the sum of the first terms. S n = n ( a 1 + a n ) 2 , where is the number of terms, is the first term and is the last term.

Answer 2

Hey!!✌✌
U need to use this formula --

sn= n/2 +{ 2a +(n-1)d}