What is the sum of the first 15 even numbers?

Sum of the first 15 even numbers

The first 15 even numbers range from 2 to 30. On this page, we will show you how to calculate the first 15 positive even whole numbers by using our formula.

The formula to calculate the sum of even numbers is: sum = n × ( n + 1) where n is the even numbers. When we enter 15 into our formula, we get the following:

15 × (15 + 1)
= 240

Therefore, the sum of the first 15 even numbers is 240.

Be aware that we consider 2 to be the first positive even number. If you consider 0 to be the first positive even number, then the answer to the sum of the first 15 even numbers would be 210.

Note that the sum of the first 15 even numbers is not the same as the sum of all even numbers up to 15. The sum of all even numbers from 1 to 15 inclusive is 56.

Sum of Even Numbers Calculator
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