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2024 SSMO Relay Round 2 Problems/Problem 2

Revision as of 16:01, 2 May 2025 by Pinkpig (talk | contribs) (Created page with "==Problem== Let <math>T = TNYWR.</math> If <cmath>a = \sum_{n=1}^{N}n(n+1)(n+2),</cmath> find the last three digits of <math>a.</math> ==Solution==")
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Problem

Let $T = TNYWR.$ If \[a = \sum_{n=1}^{N}n(n+1)(n+2),\] find the last three digits of $a.$

Solution

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