What is the average of the first 218 natural numbers?

The average of the first 218 natural numbers

Here we will define and show you the formula and the math to calculate the average of the first 218 natural numbers.

The first 218 natural numbers are the whole numbers (integers) that start with 1 and end with 218. To make a list of the first 218 natural numbers, you simply count up to 218.

To get the average of those 218 numbers, you add them up and then divide the sum by 218. We created a formula that can calculate the average of any sequence of natural numbers starting with 1. Here is the formula to calculate the average (avg) of the first n natural numbers:

avg = ((n × (n + 1)) ÷ 2) ÷ n

When we enter n = 218 in our formula, we get the average of the first 218 natural numbers. Here is the math and the answer:

avg = ((n × (n + 1)) ÷ 2) ÷ n
avg = ((218 × (218 + 1)) ÷ 2) ÷ 218
avg = ((218 × 219) ÷ 2) ÷ 218
avg = (47742 ÷ 2) ÷ 218
avg = 23871 ÷ 218
average = 109.5

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