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Number of square-triangle (square triangular number)

Number of square-triangle has the properties of a square and a triangular number.          


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Conversion between number bases

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Trigonometric functions calculator

Calculator by entering an angle in degrees or radians calculated values ​​of the basic trigonometric functions.
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Calculator drink alcohol content

The calculator calculates the approximate alcoholic drink prepared on the basis of designs by Dave Miller, George Fixa or Jean De Clerck.        
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Coverage of debt

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Verifier allows you to validate the tax identification number entered
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Illness Calculator - Calculate sickness (illness)

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Calculator calculates sick pay during sick leave, taking into account the various reasons for absence.