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You add the numbers, then divide the result by 3. In this case you divide by 3 because there are 3 numbers.

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โˆ™ 2016-10-30 12:39:13
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โˆ™ 2016-10-30 01:13:55

21 + 17 + 19 = 57 / 3 = 19.

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Anonymous

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โˆ™ 2020-05-01 01:15:07

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Q: What is the average of 21 17 and 19?
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