now that the earth is round.It... 3.Somebody has said that we are not alone in the Universe.It...
It was believed that the earth was flat.
2×2:2÷2=1
2×2×2-2=6
2×2÷2+2=4
2-2×2+2=2
2+2+2×2=8
2÷2+2×2=5
(2×2+2)÷2=3
А дальше помочь не могу!