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User:Piphi/AoPS Wiki

< User:Piphi
Revision as of 21:10, 2 June 2020 by Piphi (talk | contribs)
Welcome to Piphi's Wiki!

The Piphi Wiki project is administered by the legendary piphi for supporting educational content useful to avid math students.

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?

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