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4*(4+1)=4*5=205*(5+1)=5*6=306*(6+1)=6*7=427*(7+1)=7*8=568+(8+1)=8*9=729+9=? ===> 9*(9+1)=? ===> 9*10=90(?)
4*(4+1)=4*5=20
ΑπάντησηΔιαγραφή5*(5+1)=5*6=30
6*(6+1)=6*7=42
7*(7+1)=7*8=56
8+(8+1)=8*9=72
9+9=? ===> 9*(9+1)=? ===> 9*10=90(?)