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Multiplication table

Multiplication table 20 × 20 gives the opportunity to multiply their arbitrary natural numbers (1-20).


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Conversion between number bases

Converter allows you to convert numbers between number bases - binary (binary), trójkowym, czwórkowym, Friday, szóstkowym, siódemkowym, octal (octal), dziewiątkowym, decimal (decymalnym) jedenastkowym, dwunastkowym, trzynastkowym, czternastkowym, piętnastkowym, hexadecimal (hex). Typed characters that are not numbers and the letters A, B, C, D, E, F are ignored.      
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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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Illness Calculator - Calculate sickness (illness)

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

Jak oszacować niezbędną ilość tapety?
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Weighted average ratings

The calculator calculates the weighted average of the ratings of the following items.