Difference between revisions of "Even number"
From Encyclopedia of Mathematics
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| − | A number that is divisible (without remainder) by $2$. Even numbers are: $0, \pm2, \pm4, \pm6, \pm8, \pm10,\dots$ An integer $k$ is even if and only if the last | + | A number that is divisible (without remainder) by $2$. Even numbers are: $0, \pm2, \pm4, \pm6, \pm8, \pm10,\dots$ An integer $k$ is even if and only if the last digit of $k$ is even. For example $2139856$ is even, while $2146903$ is not even (but odd). |
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A number not divisible by 2 (i.e. leaving remainder 1) is called an [[Odd number|odd number]]. | A number not divisible by 2 (i.e. leaving remainder 1) is called an [[Odd number|odd number]]. | ||
Revision as of 19:14, 7 December 2012
A number that is divisible (without remainder) by $2$. Even numbers are: $0, \pm2, \pm4, \pm6, \pm8, \pm10,\dots$ An integer $k$ is even if and only if the last digit of $k$ is even. For example $2139856$ is even, while $2146903$ is not even (but odd).
Comments
A number not divisible by 2 (i.e. leaving remainder 1) is called an odd number.
How to Cite This Entry:
Even number. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Even_number&oldid=29129
Even number. Encyclopedia of Mathematics. URL: http://encyclopediaofmath.org/index.php?title=Even_number&oldid=29129