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How are the triangular numbers related to the consecutive numbers 1, 2, 3, 4, 5, 6, 7, ...?

User Rushafi
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1 Answer

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T_n=(n(n+1))/(2) where
T_n is a triangular number and
n\in\{1,2,3,4,5,\ldots\}



User Govinda Rajbhar
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