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Highest Number of Mental Multiplication Problems Solved by a Minor (Male) in 3 Hours

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Highest Number of Mental Division Problems Solved by a Minor (Male) in 2 Hours

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Highest Number of Mental Multiplication Problems Solved by a Minor (Male) in 4 Hours

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Highest Number of Arithmetic Problems Solved using an Abacus by a Minor (Male) in 30 Minutes

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Highest Number of People Solving Arithmetic Problems using an Abacus in 5 Hours

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Highest Number of Photos Uploaded to Instagram in 4 Hours