A visual proof why 1+3+5+...+(2n-1)=n²
— Fermat's Library (@fermatslibrary) January 11, 2020
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January 11, 2020 at 05:20AM
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A visual proof why 1+3+5+...+(2n-1)=n²
— Fermat's Library (@fermatslibrary) January 11, 2020
⚪⚫⚪⚫⚪⚫
⚫⚫⚪⚫⚪⚫
⚪⚪⚪⚫⚪⚫
⚫⚫⚫⚫⚪⚫
⚪⚪⚪⚪⚪⚫
⚫⚫⚫⚫⚫⚫
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