Sum of an Arithmetic Series

Find the sum of the Arithmetic Series with first term 1, common difference 3 and last term 100!

The sum of the first 20 terms of an Arithmetic Series is identical to the sum of the first 22 terms. If the common difference is -2, find the first term!

Q1. How many people live in the city?

• A) 149

• B) 11,200

• C) 5,600

• D) 140

Q1. What is the total number of units sold?

• 1) 2450

• A) 4800

• 2) 2400

• 3) 9700

Find the sum of the arithmetic series using a formula.

• 516, 240

• 516,242

• 116, 242

• 506, 242

Find the sum the series.

• 20

• -25

• 25

• 28

An Arithmetic Progression has 3 as its first term. Also, the sum of the first 8 terms in twice the sum of the first 5 terms. Find the common difference!