数量关系考题解析（Quantitative relation examination questions analysis）.docVIP

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数量关系考题解析（Quantitative relation examination questions analysis）.doc

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数量关系考题解析（Quantitative relation examination questions analysis）

数量关系考题解析（Quantitative relation examination questions analysis） .txt husband, if you can only live a day, I would like to use my life to continue your life, you want to live happily, when the proposed breakup, please do not say you still love me. Figure for expert Shen Dong depth analysis of Hubei province in 2008, the relationship between the number of exam Zhenti, remind candidates to pay attention to the following focus, internal skills and special tips. Emphasis 1: application of direct substitution method Brief introduction: the direct substitution method is a very common method in line test, and it is also used in the examination of Hubei in the 08 year. [case 1] four rooms, each room of no less than 2 people, any three rooms in the number of not less than 8 people, the four rooms, at least how many people? [Hubei 2008A-42] A. 9, B. 11, C. 10, D. 12 Analysis: the solution of this problem needs to be constructed to meet the minimum requirement, which is difficult to some extent. But the topic is optional, so you can start with the options. Set four rooms, namely, a, B, C, Ding, by the Serie A, B, C, three rooms and not less than 8, and Ding not less than 2, so the number of four rooms no less than 10. First of all, to see if 10 people can be constructed. In 10 people, the number of people in four rooms is 2, 2, 3 and 3. At this point, the first three numbers add up to 7, which does not meet the requirements. The next step is to construct 11 people, with the number of people distributed at 2, 3, 3, and 3, at this time to meet the requirements. So the answer is B. [a] 2 cases of grade eight students mathematics contest a total of 20 questions, 5 points for each correct answer, no answer or wrong deduction of 1 points, what is the number of questions to get more than 80 points at least right? [Hubei 2008B-40] A. 15, B., 16, C., 17, D., 18 Analysis: this question has at least, so you can start directly from the option A into the verification, it is clear that you ca