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(8 pts) Suppose we have 6 fuses, 4 are functional, 2are defective. We test the fuses one-by- one without replacement. What is the probability that

(8 pts) Suppose we have 6 fuses, 4 are functional, 2are defective. We test the fuses one-by- one without replacement. What is the probability that we find 2 defective fuses in at most 4 tests

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