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Răspuns:
aduni toate numerele :4+5+6+7+8+9+10=49
Răspuns:
4×2=8
5×4=20
6×3=18
7×6=42
8×5=40
9×3=27
10×2=20
8+20+18+42+40+27+20=175
Explicație pas cu pas: