Monday, November 05, 2007

Combining the digits 1,2,7 and 8, form the integers from 1 to 10.
This is possible with the basic operations +, -, * and / .

1 Comments:

Anonymous Anonymous said...

1 = (2-1) * (8-7)
2 = (2-1) + (8-7)
3 = (2+1) * (8-7)
4 = (2+1) + (8-7)
5 = (8+7) / (2+1)
6 = (2*7) - (8*1)
7 = (8+7-1) / 2
8 = (8+7+1) / 2
9 = (2*8) - (7*1)
10 = (2*8) - (7-1)

November 8, 2007 at 9:13 AM  

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