Puzzle #242 Solution: 2018

Spoiler Inside: Solution to Puzzle SelectShow

2 thoughts on “Puzzle #242 Solution: 2018

  1. Kyle Corbin

    All solutions are possible using the digits in order, instead of the out-of-order solutions you used for some:
    0 = 2 x 0 x 1 x 8
    1 = -((2 + 0!)!) – 1 + 8
    2 = 2 + (0 x 1 x 8)
    3 = (2 + 0! +1)! / 8
    4 = -2 – 0! – 1 + 8
    5 = -2 – 0 – 1 + 8
    6 = -2 + (0 x 1) + 8
    7 = 2 x 0 – 1 + 8
    8 = 2 x 0 x 1 + 8
    9 = 2 x 0 + 1 + 8

    1. Gene Wirchenko Post author

      Clever, but your solution is incorrect in that I did not allow unary negation. I considered allowing it, but I did not realise that it would have allowed an all-in-order solution. I may allow it next year.

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