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Puncte in plan
Posted:
Mon Jan 04, 2010 11:03 pm
by
Marius Mainea
Fiind date
\( n\ge 4 \)
puncte in plan, oricare doua la distanta mutuala numar intreg, demonstrati ca cel putin
\( \frac{1}{6} \)
dintre aceste distante sunt divizibile prin 3.