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Calculati 26+27+................+145

Răspuns :

145-26+1=120 sper ca te.am ajutat

1+2+3+...+145-(1+2+...+25)
145*(145+1):2-25*(25+1):2
145*146:2-25*26:2
145*73-25*13
10 585-325
10 910