What is the average of odd numbers from 8 to 99? Here we will show you how to calculate the average of odd numbers from 8 to 99.
To find the average of the odd numbers from 8 to 99, we first calculate how many odd numbers there are from 8 to 99. Then, we calculate the sum of odd numbers from 8 to 99. And finally, we divide the sum by the number of odd numbers to get the average.
The range is from 8 to 99, and the odd numbers within that range are from 9 to 99. Therefore, the first odd number in the sequence is 9, and the last odd number in the sequence is 99.
Step 1) Calculate the total number of odd numbers from 8 to 99
Here we calculate the total number of odd numbers from 8 to 99 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 = (99 - 9 + 2) ÷ 2
tot = 92 ÷ 2
tot = 46
Total odd numbers from 8 to 99 = 46
Step 2) Calculate the sum of odd numbers from 8 to 99
To calculate the sum of odd numbers from 8 to 99, 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 = (46 ÷ 2) × (2 × 9 + (2 × (46 - 1))
sum = 23 × (18 + 90)
sum = 23 × 108
sum = 2484
Sum of odd numbers from 8 to 99 = 2484
Step 3) Calculate the average of odd numbers from 8 to 99
Almost done! Now we can calculate the average of odd numbers from 8 to 99 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 = 2484 ÷ 46
Average = 54
Average of odd numbers from 8 to 99 = 54
Average of Odd Numbers Calculator
Here you can calculate the average of odd numbers of a different sequence.