What is the average of the first 1981 natural numbers?

The average of the first 1981 natural numbers

Here we will define and show you the formula and the math to calculate the average of the first 1981 natural numbers.

The first 1981 natural numbers are the whole numbers (integers) that start with 1 and end with 1981. To make a list of the first 1981 natural numbers, you simply count up to 1981.

To get the average of those 1981 numbers, you add them up and then divide the sum by 1981. 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 = 1981 in our formula, we get the average of the first 1981 natural numbers. Here is the math and the answer:

avg = ((n × (n + 1)) ÷ 2) ÷ n
avg = ((1981 × (1981 + 1)) ÷ 2) ÷ 1981
avg = ((1981 × 1982) ÷ 2) ÷ 1981
avg = (3926342 ÷ 2) ÷ 1981
avg = 1963171 ÷ 1981
average = 991

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What is the average of the first 1982 natural numbers?
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