Ducky Havok Posted May 28, 2007 Share Posted May 28, 2007 I completely stole this from iGoogle brainteasers. Move one number to make this equation correct: 101-102=1 Link to comment Share on other sites More sharing options...
Dak Posted May 28, 2007 Share Posted May 28, 2007 can I move the first '1', and lay it diagonally across the equals sign? like this: [math]01-102{\neq}1[/math] sort of Link to comment Share on other sites More sharing options...
brabos Posted May 28, 2007 Share Posted May 28, 2007 101-102=1 (i.e. 101-10^2=1) Link to comment Share on other sites More sharing options...
spooky Posted May 28, 2007 Share Posted May 28, 2007 101-102=1 102-102=0 Link to comment Share on other sites More sharing options...
John Cuthber Posted May 28, 2007 Share Posted May 28, 2007 101=102-1 But that's not moving a number; was the original question set out with matches, toothpicks or some such? Link to comment Share on other sites More sharing options...
Ducky Havok Posted May 28, 2007 Author Share Posted May 28, 2007 No, it was just numbers, and brabos got it right. It's supposed to be 101-10^2=1. I do like Dak's idea, though. Link to comment Share on other sites More sharing options...
bored_teen Posted June 13, 2007 Share Posted June 13, 2007 i was gonna change 101-102=1 into 102-101=1. he said move one number, not one digit. last time i checked, 102 is a number. Link to comment Share on other sites More sharing options...
Ducky Havok Posted June 14, 2007 Author Share Posted June 14, 2007 But that's moving a number and a sign, not just a number, and would be quite similar to John's post (#5). Link to comment Share on other sites More sharing options...
bored_teen Posted June 14, 2007 Share Posted June 14, 2007 how did i move a sign?????? Link to comment Share on other sites More sharing options...
Pre4edgc Posted June 16, 2007 Share Posted June 16, 2007 You moved the negative sign from 102 to the 101. Link to comment Share on other sites More sharing options...
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