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The $5\times 5$ grid shown contains a collection of squares with sizes from $1\times 1$ to $5\times 5$. How many of these squares contain the black center square?

Mar 25, 2020

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Here is a solution: https://artofproblemsolving.com/wiki/index.php/2004_AMC_10A_Problems/Problem_16

Hope this helped!

Mar 25, 2020