mathcounts notes
The best math program for middle school students
Friday, July 18, 2025
7/18/25 H 2012 AMC 12 B reflection notes
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17 wrong confused 20 wrong, time sink 21 wrong 22 right of hands 23 wrong understood solution 24 wrong time sink casework 25 easy casework,...
Wednesday, July 16, 2025
Similar to 2023 Mathcounts chapter sprint #30, but harder (level 2)
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This question is similar to, but more difficult than the 2023 Mathcounts Chapter Sprint #30, which is as follows: Consid...
Saturday, July 12, 2025
7/12/2025 2012 AMC 12A H reflection notes
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2012 AMC 12 A Reflection Notes Correct Answers: Questions 15–21 Questions: 15, 16, 17, 18, 19, 20, 21 Note on #16: Took time on o...
Tuesday, July 8, 2025
7/8/2025 2011 AMC 12B H reflection notes
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Q16 → Wrong due to silly mistake Skipped Q20 Time-sink solution requires heavy observation and quick identification....
Expected Value Question : 2024 Mathcounts State Sprint #24 level 1.5
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Problem. Dennis rolls three fair six-sided dice, obtaining a, b, c ∈ {1,…,6}. Find \[ \mathbb{E}\!\bigl[\,|a-b|+|b-c|+|c-a|\,\bigr]. \] ...
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