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您好。計(jì)算過程如下：第一，采用概率法。NPV=（60×0.3%2B80×0.4%2B100×0.3）/（1%2B10%）%2B（80×0.3%2B90×0.4%2B100×0.3）/（1%2B10%）^2%2B（90×0.5%2B100×0.5）/（1%2B10%）^3%2B（80×0.5%2B90×0.5）/（1%2B10%）^4-210。第二，肯定當(dāng)量法=（60×0.3%2B80×0.4%2B100×0.3）×0.9/（1%2B10%）%2B（80×0.3%2B90×0.4%2B100×0.3）×0.95/（1%2B10%）^2%2B（90×0.5%2B100×0.5）×0.98/（1%2B10%）^3%2B（80×0.5%2B90×0.5）×0.98/（1%2B10%）^4-210。