perplexus.info :: Numbers : Plus and Minus

Plus and Minus (Posted on 2003-02-05)

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)

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Puzzle Thoughts

Comment 7 of 7 |

There are many equations in conformity with the given puzzle, Eight of these are:

--> 1+2+3-4+5+6+78=100

--> 1+23-4+5+6+78-9=100

--> 12-3-4+5-6+7+89=100

--> 12+3+4+5-6-7-89=100

--> 123-4-5-6-7+8-9=100

--> 123+45-67+8-9=100

--> 123-45-67+89=100

--> 1+23-4+56+7+8+9=100

Posted by K Sengupta on 2022-09-09 00:59:40

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