lab 27

Pa=0.15+0.85(1/2Pc)---1 Pb=0.15+0.85Pa---2 Pc=0.15+0.85(Pa+Pb)---3 1代2 Pb=0.15+0.1275+0.36125Pc---4 1.4代3 Pc=0.15+0.85(0.15+0.425Pc)+0.850.15+0.1275+0.36125Pc =0.513375+0.6683125Pc 0.3316875Pc=0.513375 =>Pc=1.5477671 Pb=0.15+0.1275+0.36125*1.5477671=0.83663086 Pa=0.15+0.425*0.15477671=0.807801012 Pc>>Pb>Pa