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  • 1 # 使用者2978851529041

    (1001111.1110)二=(100 1111. 1110)二

    =(4F.E)十六

    (1001111)二=(((((((0*2+1)*2+0)*2+0)*2+1)*2+1)*2+1)*2+1)十

    =((((((1*2+0)*2+0)*2+1)*2+1)*2+1)*2+1)十

    =((((((2+0)*2+0)*2+1)*2+1)*2+1)*2+1)十

    =(((((2*2+0)*2+1)*2+1)*2+1)*2+1)十

    =(((((4+0)*2+1)*2+1)*2+1)*2+1)十

    =((((8+1)*2+1)*2+1)*2+1)十

    =(((9*2+1)*2+1)*2+1)十

    =(((18+1)*2+1)*2+1)十

    =((19*2+1)*2+1)十

    =((38+1)*2+1)十

    =(39*2+1)十

    =(78+1)十

    =(79)十

    (0.111)二=(((1/2+1)/2+1)/2)十

    =(((0.5+1)/2+1)/2)十

    =((1.5/2+1)/2)十

    =((0.75+1)/2)十

    =(1.75/2)十

    =(0.875)十

    (1001111.1110)二=(79.875)十

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