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AMC (AIMO validation set) / A emphtriangular number is a positive integer that can be expressed in the form t_(n)=1+2+3+⋯+n, for some positive integer n. The three smallest triangular numbers that are also … · Discussion
Discussing A emph{triangular number} is a positive integer that can be expressed in the form t_(n)=1+2+3+⋯+n, for some positive integer n. The three smallest triangular numbers that are also … · AMC (AIMO validation set)
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