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    Mathcounts National Sprint Round Please Help

    Math Problems
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      meticulousbunny M0★ M1 M2 M3 M4 M5
      last edited by

      B1B96C23-C0AC-402C-8764-A67E32AD5C9E.jpeg

      Hi there,
      Please help me with this problem. It says the answer is 162, but wouldn’t the answer be 9 choose 3?
      Thank you!

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      • mathnerd_101M
        mathnerd_101 M0 M3
        last edited by

        Not really 🙂 Notice how Elmo has three blocks. It wouldn't be $$\binom{9}{3}$$ because you use a separate block every time so you would have to choose the first block, then the second, and so on. Try to see where you can go from there 😉

        Note: Sorry this is so late I doubt you're active on this forum anymore.

        If you see the text messages between two programmers, here are some common acronyms to know:
        imo: iteration may overload
        brb: bad recursion brb
        rofl: right-oriented frame layout

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