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What is the Average of First 13 Odd Composite Numbers?

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getcalc.com's average of first n composite numbers calculator, formulas, numbers chart, examples and workout to find what is the mean or average of first 13 odd composite numbers. 35.4615 is an average of first 13 odd composite (non-prime) numbers mentioned in the below table, by substituting the total sum and count of numbers in the below formula.

Numbers Chart

The below chart is the complete list of first 13 odd composite numbers for user reference.

First 13 Odd Composite Numbers Chart (9 - 57)
9152125273335394549
515557

how to find the average of First 13 Odd Composite Numbers?

The below workout with step by step calculation shows how to find what is the average of first 13 odd composite numbers manually.
step 1 Input values:
The first 13 odd composite numbers
9, 15, 21, . . . . , 55, 57

step 2 Find the sum of first 13 oddcomposite numbers
9 + 15 + 21 + . . . . + 55 + 57 = 461

step 3 Divide the sum by 13
461/13 = 35.4615

35.4615 is an average of first 13 natural numbers or positive integers.

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