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Stiind ca a si b sant cifre distincte determinati numerele divizibile cu 10 de forma a) 12a b)a4b c)63a0 d)9ab

Răspuns :

a) 120
b) 140,240,340,440,540,640,740,840,940
c) 630
d) 900,910,920,930,940,950,960,970,980,990