Hello aspirant
The sum of first nth term
According to the formula - The sum of the first n the term of arithmetic sequence is equal to n divided by 2 times the sum of twice the beginning term a , and product of the common difference and n -1
∑ ( a +kd) = n/2 [ 2a + (n-1) d]
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile