Tuesday 25th April 2023
    Difficulty: Very hard

    Rubik's Cube (Quiz #158)

    Photo by <a href="https://unsplash.com/@neonbrand?utm_source=unsplash&utm_medium=referral&utm_content=creditCopyText">Kenny Eliason</a>
    Photo by Kenny Eliason (Unsplash)

    The Rubik's Cube is a 3-D puzzle invented by Hungarian sculptor and professor of architecture Ernő Rubik.

    1. In what year did Ernő Rubik invent his cube?

    2. How many possible permutations (approximately) are there for a standard 3x3x3 Rubik's Cube?

    3. What colour is opposite yellow on a completed Rubik's Cube?

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