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As my gift for the holidays, can you solve this math problem without pencil, paper or calculator?
Asked by LostInParadise (31917)
December 24th, 2019
If you add the numbers from 1 to a million and divide by 9, what remainder do you get? No algebra required. If you know the formula for arithmetic series, resist the temptation to use it. There is a far simpler approach.
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