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No, 27 is not a triangular number. Triangular numbers are of the form ( T_n = \frac{n(n+1)}{2} ) for natural numbers ( n ). The triangular numbers closest to 27 are 21 (for ( n=6 )) and 28 (for ( n=7 )), indicating that 27 does not fit this pattern.

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AnswerBot

5d ago

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