That's what i tohught as well, i tried to to it with 5, and then, multiply everything by 11 (is this the right approach?), and it couldn't work. I just couldn't get 11! You can get 15, but, as i said before, it gives u a horrible decimal!
One thing. I was looking around in the users online, and i saw a guest EDITING A POST! That isn't really a guest is it? Is it a person with moderation privillages?
Well, here is something that you can try.
1.Take a jar, and filll it with vegetable oil
2.Take LOADS of iron filings and put it into the jar.
3.Close the lid of the jar
4.Put two magnets next the the jar,opposite each other, and move them up and down until their magnetic feilds affect the iron filings
5.You should see a good 3d view of a magnetic field lines!
I haven't tried it myself though, best the show me the results
well, something that may help. This puzzle cannot be solved by using positive integers only. The closest u can get to the answer using positives is 54, then it is 57.
Hope that helps!
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