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Even or Odd Numbers

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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Even or Odd Numbers -

Tag(s) : Data Processing, Mathematics

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Even or Odd Numbers

Parity Filter/Calculator


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Answers to Questions (FAQ)

How to check if a number is even?

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")

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Even or Odd Numbers on dCode.fr [online website], retrieved on 2024-11-21, https://www.dcode.fr/even-odd

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