Tool to automatically detect the parity of a list of numbers. The parity of a number is the property that to be (or not to be) a multiple of two. An integer multiple of 2 is an even integer, the others are odd integers.

Even or Odd Numbers - dCode

Tag(s) : Data Processing, Mathematics

dCode is free and its tools are a valuable help in games, maths, geocaching, puzzles and problems to solve every day!

A suggestion ? a feedback ? a bug ? an idea ? *Write to dCode*!

A number is even if it is a multiple of $ 2 $ (two). A number is multiple of $ 2 $ if it has $ 2 $ as divisor. An integer number has the number $ 2 $ as a divisor if the remainder of the division by $ 2 $ is $ 0 $ (ie the result is an integer and not a floating point number).

__Example:__ $ 12 $ is even because $ 12 / 2 = 6 $ (integer)

__Example:__ $ 123 $ is odd because $ 123 / 2 = 61.5 $ (not integer)

The multiples of $ 2 $ end with `0`, `2`, `4`, `6` or `8`. Check if a number is multiple of $ 2 $ can thus be realized quickly by looking at the last digit of the number.

The calculation modulo 2 (noted `%2`) is widespread in computing to check the parity of a number. The calculation returns `1=true` if the number is odd and `0=false` if the number is even.

__Example:__ `1234%2=0` therefore `1234` is even

Excel has a function `ISODD()`, else there is a formula `=IF(MOD(A1,2),"odd","even")`

dCode retains ownership of the "Even or Odd Numbers" source code. Except explicit open source licence (indicated Creative Commons / free), the "Even or Odd Numbers" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Even or Odd Numbers" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Even or Odd Numbers" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!

Reminder : dCode is free to use.

The copy-paste of the page "Even or Odd Numbers" or any of its results, is allowed (even for commercial purposes) as long as you credit dCode!

Exporting results as a .csv or .txt file is free by clicking on the *export* icon

Cite as source (bibliography):

*Even or Odd Numbers* on dCode.fr [online website], retrieved on 2024-10-05,

even,odd,parity,modulo,2,multiple,two

https://www.dcode.fr/even-odd

© 2024 dCode — El 'kit de herramientas' definitivo para resolver todos los juegos/acertijos/geocaching/CTF.

Feedback