SOLUTION: I have a fan that has 4 light bulbs installed ... 60 watt bulb has a probability of failure that equals 0.2, 40 watt bulbs have a probability of failure that equals .1, IF I have 1

Question 1026960: I have a fan that has 4 light bulbs installed ... 60 watt bulb has a probability of failure that equals 0.2, 40 watt bulbs have a probability of failure that equals .1, IF I have 1 60 watt bulb and 3 40 watt bulbs, what is the probability that I will not be in the dark. round to 5 significant figures.

.1 x .1 x .1 = .001
1-.001 = .999
1-0.2 = .8
.999 + 1.799
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!
Find the probability you will be in the dark, then subtract from 1.

So then,

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