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Mathematics, 03.08.2019 15:00 HaPow6019

Acircuit to run a model railroad has 8 switches. two are defective. if a person selects 2 switches at random and tests them, find the probability that the second one is defective, given that the first one is defective.

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Acircuit to run a model railroad has 8 switches. two are defective. if a person selects 2 switches a...

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