Question

How to find the sum of an arithmetic series?

Answer 1

Here is the formulae to find the sum of an arithmetic series :-

➡ Sⁿ = n/2 [ 2a + ( n-1 ) d ]

Where,

Sⁿ = sum of n terms
a = first term
n = number of terms
d = common difference

➡ Sⁿ = n/2 ( a + l )

Where,

Sⁿ = sum of n term
n = number of terms
a = first term
l = last term.

Hope it will help you !!