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perfecte. Aceste afirmaţii rămân valabile dacă se folosesc cifrele 3, 5, 6?<br />

Ruxandra Ioana Vâlcu, elevă, Iaşi<br />

VII.38. Fie a, b, c cifre nenule, a 6= c. Săsearatecădacă abb...bc<br />

cbb...ba = ac<br />

ca<br />

(termenii primei fracţii conţinând câte 2003 cifre b), atunci b = a + c.<br />

Mihaela Bucătaru, Iaşi<br />

VII.39. Dacă x

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