Guest Posted February 15, 2008 Report Share Posted February 15, 2008 How many cylindrical pencils (1 cm radius, 10 cm length) can you arrange, so that each of them touches the other? If the pencils were infinite in length, will the solution change? Quote Link to comment Share on other sites More sharing options...
0 rookie1ja Posted February 15, 2008 Report Share Posted February 15, 2008 7 pencils ... check puzzle named Touch I guess infinite length would decrease the number to 6 I am quite curious about photos documenting higher numbers Quote Link to comment Share on other sites More sharing options...
0 TwoaDay Posted February 15, 2008 Report Share Posted February 15, 2008 what if they were different lengths? Quote Link to comment Share on other sites More sharing options...
0 Guest Posted February 16, 2008 Report Share Posted February 16, 2008 I don't believe 7 is the lucky number though i have seen the pics too .. whats the mathematical logic behind it? and how does it change t 6 for infinitely long pencils? Quote Link to comment Share on other sites More sharing options...
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How many cylindrical pencils (1 cm radius, 10 cm length) can you arrange, so that each of them touches the other?
If the pencils were infinite in length, will the solution change?
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