What is the average of odd numbers from 7 to 86? Here we will show you how to calculate the average of odd numbers from 7 to 86.
To find the average of the odd numbers from 7 to 86, we first calculate how many odd numbers there are from 7 to 86. Then, we calculate the sum of odd numbers from 7 to 86. And finally, we divide the sum by the number of odd numbers to get the average.
The range is from 7 to 86, and the odd numbers within that range are from 7 to 85. Therefore, the first odd number in the sequence is 7, and the last odd number in the sequence is 85.
Step 1) Calculate the total number of odd numbers from 7 to 86
Here we calculate the total number of odd numbers from 7 to 86 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 = (85 - 7 + 2) ÷ 2
tot = 80 ÷ 2
tot = 40
Total odd numbers from 7 to 86 = 40
Step 2) Calculate the sum of odd numbers from 7 to 86
To calculate the sum of odd numbers from 7 to 86, 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 = (40 ÷ 2) × (2 × 7 + (2 × (40 - 1))
sum = 20 × (14 + 78)
sum = 20 × 92
sum = 1840
Sum of odd numbers from 7 to 86 = 1840
Step 3) Calculate the average of odd numbers from 7 to 86
Almost done! Now we can calculate the average of odd numbers from 7 to 86 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 = 1840 ÷ 40
Average = 46
Average of odd numbers from 7 to 86 = 46
Average of Odd Numbers Calculator
Here you can calculate the average of odd numbers of a different sequence.