101-x-x≥28
    p×2p（1－p）×3p（1－p）²＞1.75
    3x－1>0
    2x－3>0
    4x－8x+1<0
    0>n^2-3n-363
    n^2-n-365>0
    9-X＞0
    50-15((1+x)^5-1)/(x*(1+x)^5)>0
    30-5((1+x)^5-1)/(x*(1+x)^5)>0
    -50+15((1+x)^5-1)/(x*(1+x)^5)>0
    -20+10((1+x)^5-1)/(x*(1+x)^5)>0
    -30+5((1+x)^5-1)/(x*(1+x)^5)>0
    20-10((1+x)^5-1)/(x*(1+x)^5)>0
    -22.94x^3+187.97x-6.11>0
    ( ( 1.3045 * b + 2.3624 ) - 11.61828 ) ^ 2 + ( ( 2.0173 * b + 3.6418 ) - 18 ) ^ 2 <0.0001
    ( ( 1.3045 * b + 2.3624 ) - 11.61828 ) ^ 2 + ( ( 2.0173 * b + 3.6418 ) - 18 ) ^ 2 <0.0009
    ( ( 1.3045 * b + 2.3624 ) - 11.61828 ) ^ 2 + ( ( 2.0173 * b + 3.6418 ) - 18 ) ^ 2 <0.0006
     ( ( 1.3045 * b + 2.3624 ) - 11.61828 ) ^ 2 + ( ( 2.0173 * b + 3.6418 ) - 18 ) ^ 2 <0.0003
     ( ( 1.3045 * b + 2.3624 ) - 11.61828 ) ^ 2 + ( ( 2.0173 * b + 3.6418 ) - 18 ) ^ 2 <0.0009

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