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小 發表於 2020-12-11 11:44 PM (第 1204 天)
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Probabilities (II)
A certain electronics device has three independent components A,B and C. Within the first year of use, the probabilities that A, B and C will malfunction are 0.2,0.3 and 0.4 respectively. The device will not function properly under any of the following situation.
(1) A malfunctions, or (2) B and C both malfunction
Find the probability of the following event
the device function properly within the first year of use