Verifiers

Is the phrase is a palindrome

Calculator checks to see if the specified expression is a palindrome. Palindrome - sounding words as read from left to right and from right to left.

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81184

Verifiers

Verification ISBN preview

Jak sprawdzić numer ISBN?
Jak zweryfikować numer ISBN?

Calculator allows you to verify the ISBN number entered.

67309

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.

57557

Verifiers

Verifier numbers EAN-13 preview

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

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Building

Calculator VAT refund for building materials

The calculator calculates the amount of VAT that can be refunded in respect of incurred expenses associated with the purchase of construction materials.

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Math

Number of tetrahedral

Tetrahedral numbers are the natural numbers, for which it is possible to construct a tetrahedron formnego of bullets. They are a special case of the pyramidal numbers.

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Math

Sieve of Eratosthenes

The program generates the prime numbers in a given range using the sieve of Eratosthenes algorithm.

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Life

Speed bowling ball

The calculator calculates the average speed of the bowling ball thrown from the offside line for the entry in field settings bowling.

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Math

Field and volume of a sphere

Calculator by entering the radius of the sphere is calculated its surface and volume.