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.
Why doesn't this compound cause seawater to become acidic? if all this compound was to vanish from the atmosphere, would humans benefit? why or whynot?
When an opinion poll calls residential telephone numbers at random, only 20% of the calls reach a live person. You watch the random digit dialing machine make 15 calls. What is the mean number of calls that reach a person?
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The theoretical probability of undesirable side effects resulting from taking Grebex is 2 in 19. If 570 people take Grebex to lower their blood pressure, how many will encounter undesirable side effects?
An iron skillet weighing 1.48 kg is heatedon a stove to 172°C. Suppose the skillet is cooled to room temperature, 21°C. How much heat energy (in joules) must be removed to effect this cooling? The specific heat of iron is 0.449 J/(g &middo
Consider a cold air analysis and use k=1.4/ Cv=0.718 kj/kgK/ Cp=1.005 kj/kgK. Sketch the cycle using a P-V diagram, calculate max pressure, and heat transfer into the cycle per unit mass in kj/kg.
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