Pick a subset of r people
How many ways are there first to pick a subset of r people from 50 people (each of different height), and next to pick a second subset of s people such that everyone in the first subset is shorter than everyone in the second subset?
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The U.S. Department of Education reported that for the past seven years 4,033, 5,652, 6,407, 7,201, 8,719, 11,154, and 15,121 people received bachelor's degrees in computer and information sciences. What is the arithmetic mean annual number receiv
Find the charge on each capacitor and the votage across each capacitor.
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