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.

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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.

What is the modulo 2 calculation?

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

How to check a number parity in Excel?

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

Source code

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Thanks to your feedback and relevant comments, dCode has developed the best 'Even or Odd Numbers' tool, so feel free to write! Thank you!

Thanks to your feedback and relevant comments, dCode has developed the best 'Even or Odd Numbers' tool, so feel free to write! Thank you!