1/6≤(1-p)^5 2/6≤(1-p)^5+5*p*(1-p)^4 3/6≤(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3 4/6≤(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2 5/6≤(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2+5*p^4*(1-p)
    1/6≥(1-p)^5 2/6≥(1-p)^5+5*p*(1-p)^4 3/6≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3 4/6≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2 5/6≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2+5*p^4*(1-p)
    1/6≥(1-p)^5 2/6≥(1-p)^5+5*p*(1-p)^4 3/6≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3 4/6≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2 5/6≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2+5*p^4*(1-p) 1≥(1-p)^5+5*p*(1-p)4+10*p^2*(1-p)^3+10*p^3*(1-p)^2+5*p^4*(1-p)
    1/6>(1-p)^5
    4x-1/3-x>1
    3/3x-1-2/x+5
    3/3x-1-2/x+5>-1
    3/3x-1-2/x+5>- 1
    3/3x-1-2/x+5>=-1
    2*x-1>3*x-5
    3（x-1）+1>5x-2（1-X）
    6x^2-126x+659<0
    (1.6x-x)×200+(1.3x-x)×100+(0.7x-x)×100=15000
    10x+9x≤30900－2400
    (2x-1)/5≤(x+1)/2
    x-3(x-2)>4
    x+2/3（30-x）≤41 x+2/3（30-x）≥40
    (x+4)/3-(3x-1)/2>1
    x-(x-1)/2>2-(x+2)/5
    ((x-3)/4)>1-(3(x+1)/8)

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