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Unformatted text preview: make matters your cell phone decides that this is the best time to stop working. You want to call your friend, but cannot remember his phone number. However, after some thought you remember that the last four digits of his phone number are 8636. Further, a helpful but knowledgeable stranger tells you that all local telephone numbers start with 4, 6, 7 or 9. Considering that you have plenty of time on your hands, you decide to try all possible combinations. If each local phone call costs 10cents and you have $15 to spend on the telephone calls, what is the probability that you will be able to call your friend before your money runs out? 5. [16 pts] Polymers are to be created from three kinds subunits. There are 5 subunits of type A, 4 of type B, and 1 of type C. How many different 10unit polymers are possible?...
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 Spring '10
 Dunn

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