Soloman Tump Posted July 3, 2017 Share Posted July 3, 2017 Are you code breaking levels of number wangery? http://www.bbc.co.uk/programmes/articles/5wkxjTtqRvq8Cyrrjxtk7tc/puzzle-for-today I will copy and paste the puzzles into this thread as they get published. Puzzle 1. Take the digits 1,2,3 up to 9 in numerical order and put either a plus sign or a minus sign or neither between the digits to make a sum that adds up to 100. For example, one way of achieving this is: 1 + 2 + 34 - 5 + 67 - 8 + 9 = 100, which uses six plusses and minuses. What is the fewest number of plusses and minuses you need to do this? I can do it in 4. My answer so far 123 + 45 - 67 + 8 - 9 Link to comment Share on other sites More sharing options...
WeAreOceans Posted July 4, 2017 Share Posted July 4, 2017 3 123-45-67+89=100 edit: solution is on the page now anyway hurk Link to comment Share on other sites More sharing options...
KovalainenFanBoy Posted July 4, 2017 Share Posted July 4, 2017 nice thread Link to comment Share on other sites More sharing options...
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