Daily Archives: December 1, 2017

DAY 336:

Today’s Challenge Try the following MATHELONA challenge by inserting the digits 0, 1, 1, 2, 3, 3, 4, 4, 5, 6, 7 and 7 into the 12 gaps below and making all three lines work out arithmetically. ◯  +  ◯   =   … Continue reading

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