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Un article trouvé pour ce sujet.
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Seven circles |
2009-09-20 |
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Bobbi pose la question :
try to put number 1 to 7 in seven circles (one in the middle, 3 on top, 3 below) so the numbers in each row of three circles--vertical, horizontal, and diagonal -- add up to 12. Each number can be used only once.
Stephen La Rocque lui répond. |
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