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7. A worker has 4 hammers and 6 screwdrivers. He must randomly select 2 tools. What is the probability that he selects at most 1

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7. A worker has 4 hammers and 6 screwdrivers. He must randomly select 2 tools. What is the probability that he selects at most 1 screwdriver? 8. A math department has 10 mathematicians and 4 statisticians. We must randomly select 6 of them. What is the probability that we select at least 5 mathematicians

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