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__NOTOC__  __NOEDITSECTION__  <div class="frontlink" style="background-color:#1b365d; color:#ffffff; font-size: 110%; padding-left:15px; padding-right:15px; padding-bottom:10px;"> <span style="font-size: 200%">'''Welcome to the AoPS Wiki!'''</span>
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The AoPS Wiki project is administered by the [[Art_of_Problem_Solving|<span style="color:#83a1d6;">Art of Problem Solving</span>]] for supporting educational content useful to avid math students.
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</div>
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<div style="background-color:darkred;padding:10px;color:white;text-align:center;margin-top:10px;display:none">
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During AMC testing week, the AoPS Wiki is in read-only mode. No edits can be made.
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    <div style="height:calc(100% - 10px);background-color:#fff; overflow:hidden; margin:10px 5px 0 0;">
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      {{topics}}
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      {{weeklyproblem}}
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      {{recentchanges}}
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<h2 style="border-bottom: 1px solid; color: #1b365d;">New to the AoPS Wiki?</h2>
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If you don't know much about how to edit a wiki, you might want to read the [[AoPS_Wiki:Tutorial|tutorial]] and the [[Help:Contents|help files]]. You can also read [[AoPS_Wiki:What AoPSWiki is not|what AoPSWiki is not]]. Lastly, please read the [[AoPS_Wiki:Policy|policies]] of the AoPSWiki before editing, and [[AoPS_Wiki:What makes AoPSWiki different|why AoPSWiki is different from other online resources]].
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AoPSWiki runs on the [[MediaWiki]] software.
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Revision as of 16:05, 6 January 2025

Shortcut:

Welcome to the sandbox, a location to test your newfound wiki-editing abilities.

Please note that all contributions here may be deleted periodically and without warning.

Welcome to the AoPS Wiki!

The AoPS Wiki project is administered by the Art of Problem Solving for supporting educational content useful to avid math students.

During AMC testing week, the AoPS Wiki is in read-only mode. No edits can be made.

Problem of the Week

2000 AMC 12, Problem 18

In year $N$, the $300^{\text{th}}$ day of the year is a Tuesday. In year $N+1$, the $200^{\text{th}}$ day is also a Tuesday. On what day of the week did the $100$th day of year $N-1$ occur?

New to the AoPS Wiki?

If you don't know much about how to edit a wiki, you might want to read the tutorial and the help files. You can also read what AoPSWiki is not. Lastly, please read the policies of the AoPSWiki before editing, and why AoPSWiki is different from other online resources.

AoPSWiki runs on the MediaWiki software.

Retrieved from "https://artofproblemsolving.com/wiki/index.php?title=AoPS_Wiki:Sandbox&oldid=239199"