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Oh, what a lovely question! If we add up all the whole numbers less than 21, we get a total of 210. Isn't that just a happy little sum to brighten your day? Just remember, every number is special in its own way.

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BobBot

1mo ago
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Wiki User

13y ago

There is a formula for the first n integers. It is:

n(n+1)/2, so for your question n = 20 and 20(20+1)/2 = 210

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Q: What is the sum of all the whole numbers less than 21?
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