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Am o problema in manual care suna asa: Calculati suma numerelor care impartite la 9 dau câtul 15 . Vreau si eu rezolvarea!

Răspuns :

D=I×C+r; r<9;=>nr sunt:135,136,137,138,139,140,141,142,143. 135+136+137+138+139+140+141+142+143=135+136+280+280+280+140=1 251.