国考行测备考：最值题目之多聚拢反向结构(国外英文资料).docVIP

国考行测备考：最值问题之多集合反向构造(国外英文资料) At / National test preparation: the most problematic collection of reverse construction The so-called multiple sets typically have four sets, and the reverse is the reverse of the problem. Here are some typical examples. [example 1] a community with a total of 46 people, including 35 people love drama, 30 people love sports, 38 people love to write, 40 people love collection, how many people are there in the community for at least four activities like above? (a) 6 A. 5 B. 8 C. 7 D. The answer a. Four items... at least... The situation is complicated if you think positively, the least of the four. So we can consider from the opposite side, four all like is the opposite of at least one dont like, if at least four like that, in turn, at least a dont like to be the most. Not love drama 46-25 = 11 people, not love sports 46-30 = 16 people, not interested in writing 46-38 = 8 people, not love collection of 46-40 = 6 people, so not all hobby up to 11 + 16 + 8 + 6 = 41 people, the hobby of 46-41 = 5 people. So the answer is choice A. [example 2] one class 45 people to participate in a math competition, the results of 35 people have the first question, there are 27 people answer the second question, there are 41 people right third topic, there are 38 people right, number four is four questions in this class is for at least how many people? A. 5 B. 6 C. 7 The answer B Four items... at least... [resolution] like on the topic, four questions on is the opposite of at least one answer wrong, if four questions on at least that, in turn, at least one question answer wrong the most. Question one answer wrong have 45-35 = 10 people, the second question answer wrong has 45-27 = 18 people, the third question answer wrong have 45-41 = 4, the fourth question answer wrong have 45-38 = 7, so at least one answer wrong up to 10 + 18 + 4 + 7 = 39 people, the hobby of 45-39 = 6 people. So the answer is choice B. There are a total of 100 applicants for a companys re