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an cuvântul matematica fiecare litera are valoarea mai mare cu 2 decat precedenta.daca valoarea primei litere este 5 asumate toate dau:

Răspuns :

5+(5+2)+(5+4)+(5+6)+(5+8)+(5+10)+(5+12)+(5+14)+(5+16)+(5+18)=5+7+9+11+13+15+17+19+21+23=12+9+11+13+15+17+19+21+23=21+11+13+15+17+19+21+23=32+13+15+17+19+21+23=45+15+17+19+21+23=60+17+19+21+23=77+19+21+23=96+21+23=117+23=140