What is the average of odd numbers from 100 to 129? Here we will show you how to calculate the average of odd numbers from 100 to 129.
To find the average of the odd numbers from 100 to 129, we first calculate how many odd numbers there are from 100 to 129. Then, we calculate the sum of odd numbers from 100 to 129. And finally, we divide the sum by the number of odd numbers to get the average.
The range is from 100 to 129, and the odd numbers within that range are from 101 to 129. Therefore, the first odd number in the sequence is 101, and the last odd number in the sequence is 129.
Step 1) Calculate the total number of odd numbers from 100 to 129
Here we calculate the total number of odd numbers from 100 to 129 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 = (129 - 101 + 2) ÷ 2
tot = 30 ÷ 2
tot = 15
Total odd numbers from 100 to 129 = 15
Step 2) Calculate the sum of odd numbers from 100 to 129
To calculate the sum of odd numbers from 100 to 129, 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 = (15 ÷ 2) × (2 × 101 + (2 × (15 - 1))
sum = 7.5 × (202 + 28)
sum = 7.5 × 230
sum = 1725
Sum of odd numbers from 100 to 129 = 1725
Step 3) Calculate the average of odd numbers from 100 to 129
Almost done! Now we can calculate the average of odd numbers from 100 to 129 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 = 1725 ÷ 15
Average = 115
Average of odd numbers from 100 to 129 = 115
Average of Odd Numbers Calculator
Here you can calculate the average of odd numbers of a different sequence.