已知lg2=0.3010,lg3=0.4771,则 lg20= lg200= lg2000= lg30= lg300= lg3000=

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已知lg2=0.3010,lg3=0.4771,则 lg20= lg200= lg2000= lg30= lg300= lg3000=

已知lg2=0.3010,lg3=0.4771,则 lg20= lg200= lg2000= lg30= lg300= lg3000=
已知lg2=0.3010,lg3=0.4771,则 lg20= lg200= lg2000= lg30= lg300= lg3000=

已知lg2=0.3010,lg3=0.4771,则 lg20= lg200= lg2000= lg30= lg300= lg3000=
lg20=lg2+lg10=1.3010 lg200=lg2+lg100 依次类推