The average of the first 1505 natural numbers


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Here we will define and show you the formula and the math to calculate the average of the first 1505 natural numbers.

The first 1505 natural numbers are the whole numbers (integers) that start with 1 and end with 1505. To make a list of the first 1505 natural numbers, you simply count up to 1505.

To get the average of those 1505 numbers, you add them up and then divide the sum by 1505. 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 = 1505 in our formula, we get the average of the first 1505 natural numbers. Here is the math and the answer:

avg = ((n × (n + 1)) ÷ 2) ÷ n
avg = ((1505 × (1505 + 1)) ÷ 2) ÷ 1505
avg = ((1505 × 1506) ÷ 2) ÷ 1505
avg = (2266530 ÷ 2) ÷ 1505
avg = 1133265 ÷ 1505
average = 753


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