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Can you arrange numbers 1 to 11 on a circle, in such a way that the sum of every two consecutive numbers is a prime number? Is it possible?
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1-4-3-8-5-6-7-10-9-2-11-1
No, it is not because there are odd amount of numbers thus at least a pair of them would result in the multiple of 2.
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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Agree! What about the numbers 1 to 16?
12
5
14
9
4
7
6
13
16
15
8
3
10
1
2
11
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That's impressive, I tried to continue using the 1-4-3-8-5-6-7-10-9-2-11 above and gave up.
Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.
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