What is the Average of Odd Numbers between 200 and 400?

The below workout with step by step calculation shows how to find what is the average of odd numbers between 200 and 400 manually.
step 1 Address the formula and input values.
Formula: Average = Total Sum of Numbers / Total Count of Numbers
Input values:
The odd numbers between 200 and 400 are
201, 203, 205, 207, . . . . , 395, 397, 399
Total Count of Numbers = 100

step 2 Find the sum of odd numbers between 200 and 400.
sum = 201 + 203 + 205 + . . . . + 397 + 399
= 30000

step 3 Divide the sum by 100
Average = 30000/100
= 300

300 is an average of odd numbers between 200 and 400.

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