Verifiers

NIP correctness in Poland

Jak sprawdzić poprawność numeru NIP?

Verifier allows you to validate the tax identification number entered

Tax identification number is a code used to identify taxpayers in Poland, which consists of 10 digits.

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71380

Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

59307

Verifiers

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

49199

Verifiers

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

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

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Calculator allows you to calculate izolacyjość single-layer wall.

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Calculator by entering the equity and total capital ratio is calculated profitability.

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The calculator calculates the amount of collected rainwater from the roof of the given dimensions. Long description