bonanova Posted November 18, 2008 Report Share Posted November 18, 2008 Take the digits 1 2 3 4 5 6 7 8 9 in order and insert + and - signs to get 100. 1 + 2 + 3 - 4 + 5 + 6 + 78 + 9 = 100. OK that's the easy way. Now do it using only 3 + and - signs. Quote Link to comment Share on other sites More sharing options...
0 Prime Posted November 18, 2008 Report Share Posted November 18, 2008 (edited) Here is using only two + and two - 123+45-67+8-9=100 Or did you mean 3 +- total? Or 3 of each? Edited November 18, 2008 by Prime Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 18, 2008 Report Share Posted November 18, 2008 I got a Bonanova math puzzle! 123-45-67+89=100 Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 18, 2008 Report Share Posted November 18, 2008 I got the same thing Grayven has, except I put the numbers in a different order: 123+89-45-67= 100 Calculators are wonderful. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 18, 2008 Report Share Posted November 18, 2008 Calculators are wonderful.I got the same thing Grayven has, except I put the numbers in a different order: 123+89-45-67= 100 You're still adding and subtracting the same thing so it would work out the same, it would be weird if you multiplied or divided! Anywho, the OP wanted it to be in numerical order. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 18, 2008 Report Share Posted November 18, 2008 I did it using 3 of each, but oh well.. 12-3-4+5-6+7+89 = 100 Quote Link to comment Share on other sites More sharing options...
0 bonanova Posted November 18, 2008 Author Report Share Posted November 18, 2008 Here is using only two + and two - 123+45-67+8-9=100 Or did you mean 3 +- total? Or 3 of each? 3 signs. Your choice. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 18, 2008 Report Share Posted November 18, 2008 Is it 123-45-67+89 Quote Link to comment Share on other sites More sharing options...
0 bonanova Posted November 21, 2008 Author Report Share Posted November 21, 2008 I got a Bonanova math puzzle! 123-45-67+89=100 Grayven has it. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 21, 2008 Report Share Posted November 21, 2008 It's almost as if I can FEEL the mathy bits of my brain starting to work again. All I need is a little more exercise. Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 21, 2008 Report Share Posted November 21, 2008 It's almost as if I can FEEL the mathy bits of my brain starting to work again. All I need is a little more exercise. Hey! You're not so smart! Clubpenguin.com Quote Link to comment Share on other sites More sharing options...
0 Guest Posted November 21, 2008 Report Share Posted November 21, 2008 Hey! You're not so smart! Clubpenguin.com ?? Quote Link to comment Share on other sites More sharing options...
Question
bonanova
Take the digits 1 2 3 4 5 6 7 8 9 in order and insert + and - signs to get 100.
1 + 2 + 3 - 4 + 5 + 6 + 78 + 9 = 100.
OK that's the easy way.
Now do it using only 3 + and - signs.
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