https://doi.org/10.4169/college.math.j.43.1.037 https://www.jstor.org/stable/10.4169/college.math.j.43.1.037 Summary Latin squares form the basis for the recreational ...
I have written down three 3-digit numbers which between them use nine different digits. One of the numbers is a perfect square and another is a triangular number. The sum of the three numbers is 2010.
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