What is the average of odd numbers from 7 to 89? Here we will show you how to calculate the average of odd numbers from 7 to 89.
To find the average of the odd numbers from 7 to 89, we first calculate how many odd numbers there are from 7 to 89. Then, we calculate the sum of odd numbers from 7 to 89. And finally, we divide the sum by the number of odd numbers to get the average.
The range is from 7 to 89, and the odd numbers within that range are from 7 to 89. Therefore, the first odd number in the sequence is 7, and the last odd number in the sequence is 89.
Step 1) Calculate the total number of odd numbers from 7 to 89
Here we calculate the total number of odd numbers from 7 to 89 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 = (89 - 7 + 2) ÷ 2
tot = 84 ÷ 2
tot = 42
Total odd numbers from 7 to 89 = 42
Step 2) Calculate the sum of odd numbers from 7 to 89
To calculate the sum of odd numbers from 7 to 89, 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 = (42 ÷ 2) × (2 × 7 + (2 × (42 - 1))
sum = 21 × (14 + 82)
sum = 21 × 96
sum = 2016
Sum of odd numbers from 7 to 89 = 2016
Step 3) Calculate the average of odd numbers from 7 to 89
Almost done! Now we can calculate the average of odd numbers from 7 to 89 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 = 2016 ÷ 42
Average = 48
Average of odd numbers from 7 to 89 = 48
Average of Odd Numbers Calculator
Here you can calculate the average of odd numbers of a different sequence.