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Add down to One (Posted on 2003-05-21) Difficulty: 3 of 5
The numbers 0-9 are lined up in a row, like this:

0 1 2 3 4 5 6 7 8 9

You have to put in + and - signs in the blanks, so that in the end it will all equal 1.

Also, if possible, try to make expressions resulting in 0 and -1.

See The Solution Submitted by Jonathan Waltz    
Rating: 2.5000 (6 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(3): Solution plus | Comment 6 of 16 |
(In reply to re(2): Solution plus by Bryan)

While the rules say you can replace a space with + or - it doesn't say you can eliminate a space.

However, once one does that, one can go up to 123,456,789 (commas inserted for clarity), with various gaps of course.
  Posted by Charlie on 2003-05-21 09:33:35

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