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Finite Sums of Positive Integers Crewneck Sweatshirt

$29

Color: Black

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A Classic visual proof showing that the sum of the first n positive integers is n times n+1 divided by 2.

Cotton/Poly fleece blend. Super warm and cozy fleece lining with a twill neckline and banded cuffs to keep in the heat.

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FedEx 2-Day (4-6 Business Days)

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