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Sunday Afternoon Maths LXI

Posted on 2017-08-20

XYZ

Which digits $$X$$, $$Y$$ and $$Z$$ fill this sum?
$$\begin{array}{cccc} &X&Z&Y\\ +&X&Y&Z\\ \hline &Y&Z&X \end{array}$$
If you enjoyed these puzzles, check out Sunday Afternoon Maths LXVI,
puzzles about square roots, or a random puzzle.