Unformatted text preview: randomly, what is the probability that they are in the correct order? 6. In how many diﬀerent ways can we obtain exactly seven heads on 10 tosses of a coin? 7. A fast food counter contains onions, relish, mustard, catsup, and hot peppers for the hot dog. How many combinations are possible using one ingredient? Using two? What is the sum of all the possible combinations (including no ingredients)? 8. A lot of 20 items contains 3 defective items. 5 items are chosen at random and tested. What is the probability that 2 are found defective ? You can leave your answer in the form of ratio of factorials. 1...
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- Spring '08
- Hamburger, fast food counter, K. Yao, 26th Read Leon-Garcia