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# Number Properties - Tricks, not just for kids.

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Manager
Joined: 14 Jul 2008
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Schools: HBS, Stanford.
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Number Properties - Tricks, not just for kids. [#permalink]

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21 Jul 2008, 20:43
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This topic is locked. If you want to discuss this question please re-post it in the respective forum.

I've looked around the wiki and the forum, but I couldn't find any definitive lists.

I am looking for simple tricks with regards to numbers, such as:

even + even = even
even x odd = even

etc.

I know that it's easy enough to do a simple example rather than memorize them. Sometimes, though, the 7-800 questions rely on 4 or 5 of these little tricks (e.g., oddxevenxeven+odd), at which point it seems easier just to memorize the tricks.

Can anyone point me to such a list of rules/tricks?

Thanks.
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SVP
Joined: 30 Apr 2008
Posts: 1880
Location: Oklahoma City
Schools: Hard Knocks
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Re: Number Properties - Tricks, not just for kids. [#permalink]

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22 Jul 2008, 08:27
Get the Manhattan Number Properties Book.
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J Allen Morris
**I'm pretty sure I'm right, but then again, I'm just a guy with his head up his a.

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Re: Number Properties - Tricks, not just for kids.   [#permalink] 22 Jul 2008, 08:27
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