Daily Archives: September 17, 2019

DAY/DYDD 260:

The Main Challenge All the following 3-digit numbers are divisible by 3, except one.  Which one? 102  111  117  126  132  139  144  153  162  168  174  180 The 7puzzle Challenge The playing board of the 7puzzle game is a 7-by-7 grid of 49 … Continue reading

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