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?
 |
All about flooble | fun stuff | Get a free chatterbox | Free JavaScript | Avatars |
