Trond Posted December 24, 2005 Share Posted December 24, 2005 Just using addition, subtraction, multiplication, and division, can you form all the numbers from 1 to 10 using exactly four 4's? You may use parentheses and you can also combine fours to make other numbers (like 44 or 444). Link to comment Share on other sites More sharing options...
cosine Posted December 24, 2005 Share Posted December 24, 2005 If you go to the General Mathematics forum we did this challenge all the way to I believe 119 or 120 Link to comment Share on other sites More sharing options...
ecoli Posted December 24, 2005 Share Posted December 24, 2005 http://www.scienceforums.net/forums/showthread.php?t=15117&highlight=fours here is is Link to comment Share on other sites More sharing options...
Trond Posted December 24, 2005 Author Share Posted December 24, 2005 Ah. Cool Link to comment Share on other sites More sharing options...
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