1个回答
2017-03-18
展开全部
1-(1-10%)×(1-1%)×(1-20%)×(1-1%)×(1-50%)
=1-0.9×0.99×0.8×0.99×0.5
=1-0.352836
=0.647164
=64.7164%,
发生的概率是64.7164%
=1-0.9×0.99×0.8×0.99×0.5
=1-0.352836
=0.647164
=64.7164%,
发生的概率是64.7164%
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