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Happy New Year (Posted on 2011-01-01) Difficulty: 3 of 5


We have just welcomed the New Year, using all 10 digits and 4 basic arithmetic signs(+, -, /, and *).

Try to get 2011 with ALL 10 digits, significantly fewer signs and no brackets.

Hint: My solution uses 10 distinct digits and 3 signs only, but maybe a better solution exists.

No Solution Yet Submitted by Ady TZIDON    
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notes on missed computer solutions | Comment 7 of 9 |

Due to the sequential nature of the calculations done, answers of the form a*(b-c) or a/(b-c) or a/(b+c) or even a-(b*c) were not included.

The subtraction filter was such that only those of the form Ady mentioned were shown. Other all-subtraction solutions had been found by the original program.

A simpler version of the program, looking for only one operation, failed to find any solutions.

  Posted by Charlie on 2011-01-01 15:13:00
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