Alexey’s Puzzle

My son, Alexey Radul, designed a puzzle for my students.

Puzzle. Simplify the expression: ln ln a · ln ln b · ⋯ · ln ln z.



  1. Puzzling:

    Very reminiscent of when our Algebra teacher asked us to expand (x-a)(x-b)(x-c)…(x-z)

  2. Gennardo:

    The answer is 0. This is the funniest mathematical puzzles I’ve ever dealt with

  3. CyberK:

    Thanks Gennardo.
    At first I was like, no it can’t be 0, I can make it 1 if for every letter I put … and then it hit me LOL.
    Cute puzzle indeed.

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