What is the average of odd numbers from 1 to 39? Here we will show you how to calculate the average of odd numbers from 1 to 39.
To find the average of the odd numbers from 1 to 39, we first calculate how many odd numbers there are from 1 to 39. Then, we calculate the sum of odd numbers from 1 to 39. And finally, we divide the sum by the number of odd numbers to get the average.
The range is from 1 to 39, and the odd numbers within that range are from 1 to 39. Therefore, the first odd number in the sequence is 1, and the last odd number in the sequence is 39.
Step 1) Calculate the total number of odd numbers from 1 to 39
Here we calculate the total number of odd numbers from 1 to 39 by entering the first and last odd number in the sequence into our formula. Here is the formula and the math:
tot = (last - first + 2) ÷ 2
tot = (39 - 1 + 2) ÷ 2
tot = 40 ÷ 2
tot = 20
Total odd numbers from 1 to 39 = 20
Step 2) Calculate the sum of odd numbers from 1 to 39
To calculate the sum of odd numbers from 1 to 39, you enter the total odd numbers (tot) from Step 1 and the first odd number in the sequence into our formula. Here is the formula and the math:
sum = (tot ÷ 2) × (2 × first + (2 × (tot - 1))
sum = (20 ÷ 2) × (2 × 1 + (2 × (20 - 1))
sum = 10 × (2 + 38)
sum = 10 × 40
sum = 400
Sum of odd numbers from 1 to 39 = 400
Step 3) Calculate the average of odd numbers from 1 to 39
Almost done! Now we can calculate the average of odd numbers from 1 to 39 by dividing the sum of odd numbers from Step 2 by the total odd numbers from Step 1. Here is the formula, the math, and the answer:
Average = sum ÷ tot
Average = 400 ÷ 20
Average = 20
Average of odd numbers from 1 to 39 = 20
Average of Odd Numbers Calculator
Here you can calculate the average of odd numbers of a different sequence.