What is the average of even numbers from 1 to 128? Here we will show you how to calculate the average of even numbers from 1 to 128.
To find the average of the even numbers from 1 to 128, we first calculate how many even numbers there are from 1 to 128. Then, we calculate the sum of even numbers from 1 to 128. And finally, we divide the sum by the number of even numbers to get the average.
The range is from 1 to 128, and the even numbers within that range are from 2 to 128. Therefore, the first even number in the sequence is 2, and the last even number in the sequence is 128.
Step 1) Calculate the total number of even numbers from 1 to 128
Here we calculate the total number of even numbers from 1 to 128 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 = (128 - 2 + 2) ÷ 2
tot = 128 ÷ 2
tot = 64
Total even numbers from 1 to 128 = 64
Step 2) Calculate the sum of even numbers from 1 to 128
To calculate the sum of even numbers from 1 to 128, 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 = (64 ÷ 2) × (2 × 2 + (2 × (64 - 1))
sum = 32 × (4 + 126)
sum = 32 × 130
sum = 4160
Sum of even numbers from 1 to 128 = 4160
Step 3) Calculate the average of even numbers from 1 to 128
Almost done! Now we can calculate the average of even numbers from 1 to 128 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 = 4160 ÷ 64
Average = 65
Average of even numbers from 1 to 128 = 65
Average of Even Numbers Calculator
Here you can calculate the average of even numbers of a different sequence.