A manufacturer car tires production process is known to yield 15 tires with defective walls in every batch of 150 tires produced. For every production batch, a sample of 5 is selected for testing. Find the probability that all tires are non-defective. Round your answer to 3 decimal places.

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Q: Determine the probability that out of 4 students are a. none b. 1 c. atleast 1 d. all will graduate.

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Q: 3. Give combinatorial proof of a k (") = n () k-1

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