What is the average of even numbers from 10 to 51? Here we will show you how to calculate the average of even numbers from 10 to 51.
To find the average of the even numbers from 10 to 51, we first calculate how many even numbers there are from 10 to 51. Then, we calculate the sum of even numbers from 10 to 51. And finally, we divide the sum by the number of even numbers to get the average.
The range is from 10 to 51, and the even numbers within that range are from 10 to 50. Therefore, the first even number in the sequence is 10, and the last even number in the sequence is 50.
Step 1) Calculate the total number of even numbers from 10 to 51
Here we calculate the total number of even numbers from 10 to 51 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 = (50 - 10 + 2) ÷ 2
tot = 42 ÷ 2
tot = 21
Total even numbers from 10 to 51 = 21
Step 2) Calculate the sum of even numbers from 10 to 51
To calculate the sum of even numbers from 10 to 51, 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 = (21 ÷ 2) × (2 × 10 + (2 × (21 - 1))
sum = 10.5 × (20 + 40)
sum = 10.5 × 60
sum = 630
Sum of even numbers from 10 to 51 = 630
Step 3) Calculate the average of even numbers from 10 to 51
Almost done! Now we can calculate the average of even numbers from 10 to 51 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 = 630 ÷ 21
Average = 30
Average of even numbers from 10 to 51 = 30
Average of Even Numbers Calculator
Here you can calculate the average of even numbers of a different sequence.