"Each digit of the number should be corrected separately. A correction procedure means a replacing an erroneous digit with a correct one."
So i can correct only one digit in each column (position)? Or any digits that i want?
What is the coreect answer for:
9
1
1

-1 or 9?

P.S. Maybe somebody has some clues on Test 6?

Edited by author 18.01.2007 18:48

It must be 9
9 --> 8   cost 1
1 --> 1   cost 0
1 --> 9   cost 8

No leading zero

total cost is 9