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Carmenserban
a fost răspuns

Calculați prin sumane gauss
1+2+3+4+5+6+7=?
7+14+21+28+35+42=?
10+20+30+40+50+60+70=?
11+13+13+15+16+17+18=?

Răspuns :

Renatemambouko
1+2+3+4+5+6+7=7*8/2=7*4=28
7+14+21+28+35+42=7(1+2+3+4+5+6)=7*6*7/2=49*3=147
10+20+30+40+50+60+70=10(1+2+3+4+5+6+7)=10*7*8/2=70*4=280
ultimul nu se poate calcula dupa formula lui gauss
11+13+13+15+16+17+18=11+26+31+35=37+66=103