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Pentagonal Numbers - Reversing The Pentagon

Discrete Mathematics Level 2

If there are 1001 dots in the \(n\)th pentagonal figure, what is \(n\)?

21 26 31 16

Excel in math and science

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It's hard to learn from lectures and videos

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Our wiki is made for math and science

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including olympiad champions, researchers, and professionals.

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by Calvin Lin

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