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Plus and Minus (Posted on 2003-02-05) Difficulty: 3 of 5
Frame at least 8 different equations by inserting plus and minus signs only into 1,2,3,4,5,6,7,8,9; to give a total of 100.

For example: 123 - 45 - 67 + 89 = 100

(The numbers must stay in the normal ascending order from 1 to 9).

See The Solution Submitted by Ravi Raja    
Rating: 2.5000 (2 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
Solution The cheesy approach | Comment 1 of 6
123 - 45 - 67 + 89
123 - 45 - 67 - -89
123 - 45 + -67 + 89
123 - 45 + -67 - -89
123 + -45 - 67 + 89
123 + -45 - 67 - -89
123 + -45 + -67 + 89
123 + -45 + -67 - -89

  Posted by friedlinguini on 2003-02-05 04:07:48
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