A pharmaceutical company recently hired 5 biologists, 3 chemists, 4 environmental scientists, and 3 economists for various upcoming projects. Suppose that the company wants to form an interdisciplinary project group of 7 from these new hires to assess the potential environmental impact of developing a new experimental drug. (b) How many project teams contain no chemists? (c) How many project teams contain 3 biologists, 1 chemist, 2 environmental scientists, and 1 economist? (d) How many project teams have at least 1 c

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