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2 3 1 2 1 3 (Posted on 2004-11-23)

If two 1's, two 2's and two 3's are arranged thus:

2 3 1 2 1 3

then the two 1's enclose 1 other digit, the two 2's enclose 2 other digits, and the two 3's enclose 3 other digits.

Can you find a similar arrangement using the seven pairs 1,1,...7,7?

See The Solution Submitted by Erik O.

Rating: 4.2857 (7 votes)

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Another solution

| Comment 8 of 10 |

Here is another solution

53647352462171

Posted by Willard on 2004-11-27 16:00:33

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