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    1.AB¼ABͬrl(f)ęCʞ0.3AΪl(f)ęCʞ0.5l(f)BęCc0.5ȴС keyAl(f)ĸʞ0.5+0.3=0.8;=0.3=PP=0.8P P=0.3750.5

    ⣺AΪl(f)ęCʞ0.5ABͬrl(f)rAl(f)ĸʑԓǣAΪl(f)ABͬrl(f)֮ͼP=0.5+0.3=0.8

    PP=PP=P/P=0.3/0.8=0.375

    2.AFĸ0.6  B F 0.8, A or b or both.Fĸc 0.92^С

    ⣺~P=1-0.6=0.4 ~P=1-0.8=0.2 ~ab=0.20.4=0.08 1-0.08=0.92

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    3.320һŮĸ0.65@ȺŮжĔ100ȴС

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    Ů˔320=96 100xB

    4. 1100 xɂͬĔ߽Ԟ 6 ıęC?

    ⣺100ﹲ6ıĂ100/6=164t16

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