What is the average of even numbers from 1 to 85? Here we will show you how to calculate the average of even numbers from 1 to 85.
To find the average of the even numbers from 1 to 85, we first calculate how many even numbers there are from 1 to 85. Then, we calculate the sum of even numbers from 1 to 85. And finally, we divide the sum by the number of even numbers to get the average.
The range is from 1 to 85, and the even numbers within that range are from 2 to 84. Therefore, the first even number in the sequence is 2, and the last even number in the sequence is 84.
Step 1) Calculate the total number of even numbers from 1 to 85
Here we calculate the total number of even numbers from 1 to 85 by entering the first and last even number in the sequence into our formula. Here is the formula and the math:
tot = (last - first + 2) ÷ 2
tot = (84 - 2 + 2) ÷ 2
tot = 84 ÷ 2
tot = 42
Total even numbers from 1 to 85 = 42
Step 2) Calculate the sum of even numbers from 1 to 85
To calculate the sum of even numbers from 1 to 85, you enter the total even numbers (tot) from Step 1 and the first even number in the sequence into our formula. Here is the formula and the math:
sum = (tot ÷ 2) × (2 × first + (2 × (tot - 1))
sum = (42 ÷ 2) × (2 × 2 + (2 × (42 - 1))
sum = 21 × (4 + 82)
sum = 21 × 86
sum = 1806
Sum of even numbers from 1 to 85 = 1806
Step 3) Calculate the average of even numbers from 1 to 85
Almost done! Now we can calculate the average of even numbers from 1 to 85 by dividing the sum of even numbers from Step 2 by the total even numbers from Step 1. Here is the formula, the math, and the answer:
Average = sum ÷ tot
Average = 1806 ÷ 42
Average = 43
Average of even numbers from 1 to 85 = 43
Average of Even Numbers Calculator
Here you can calculate the average of even numbers of a different sequence.