2011=670*3+1+2+4+8-9-5

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.

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