Verifiers

Verification of the REGON number in Poland

Verifier allows you to validate entered REGON number

Long description

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75912

Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

62830

Verifiers

Verification of the social security number in Poland

It presents data deriving from the unique social security number, such as date of birth, sex, serial number and check its correctness.

52789

Verifiers

Verifier numbers EAN-13 preview

Verifier numbers EAN-13 Calculator allows you to verify the number entered EAN-13.

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Circumference of an ellipse

The calculator calculates the circumference of an ellipse for a given length of the axis passing through it.

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Calculate how long you go on foot

Calculator calculates the approximate time given distance and overcome the distance on foot.

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Calculator seniority in Poland

Calculator to calculate the total length of service after the date of employment or dismissal.

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Illness Calculator - Calculate sickness (illness)

jak wyliczyć chorobowe? jak obliczyć zasiłek chorobowy?

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

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Mean and covariance matrix calculator

Covariance is a measure of the covariance of two variables (X and Y). The calculator calculates the average for the sample and the covariance between variables. Sets of X and Y must be the same number.