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Maximum Single Digit Mental Arithmetic Addition Problems (3 Rows) Solved in 3 Minutes by an Individual (Male)

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Maximum Single Digit Mental Arithmetic Addition Problems (4 Rows) Solved in 4 Minutes by an Individual (Female)

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Fastest Time to Solve 25 Two Digit Addition and Subtraction Problems (3 Rows) using Abacus while Listening to Songs by an Individual (Female)

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Maximum Single Digit Mental Arithmetic Addition and Subtraction Problems (8 Rows) Solved in 5 Minutes by an Individual (Female)

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Maximum Two Digit Mental Arithmetic Multiplication Problems (2 Rows) Solved in 5 Minutes by an Individual (Female)

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Maximum Three Digit Mental Arithmetic Division Problems (2 Rows) Solved in 5 Minutes by an Individual (Male)