6. Questions 13-18A breeder has ten birds:Kind Male FemaleGoldfinches H J, KLovebirds M NParakeets Q, R, S T, WThe breeder exhibits pairs of bir...
5. Questions 6-12Six reviewers-Frank, George, Hilda, Jackie, Karl, and Lena-will review four movies-Mystery, Retreat, Seasonings, and Wolves-according...
4. Questions 1-6Petworld has exactly fourteen animals (three gerbils, three hamsters, three lizards, five snakes) that are kept in four separate cages...
Passage 6Two male singers, P and S; two female singers, R and V; two male comedians, T and W; and two female comedians, Q and U, are the eight enterta...
Passage 5Eight adjacent offices completely enclose a circular central courtyard. The offices are numbered consecutively, beginning at one of the offic...
Passage 4A person who is drawing up a will has exactly five potential heirs-S, T, U, V, and W. The estate will distribute exactly seven lots of land, ...
Passage 3In a certain target-shooting game, a team must shoot at seven targets. Exactly one shot is allowed for shooting at each target. The targets a...
Passage 2An old painting portrays a seated jury of exactly six persons arranged in two parallel rows of three persons each. Each person in the back ro...
Passage 1Four women-G, H, I, and J-and four men-R, S, T, and U-are the eight people to be seated at a rectangular table. Three of the people are to si...
一、数学基本概念1、mode（众数） 一堆数中出现频率最高的一个或几个数e.g. mode of 1,1,1,2,3,0,0,0,5 is 1 and 02、range（值域） 一堆数中最大和最小数之差 e.g. range of 1,1,2,3,5 is 5-1=4 3、mean（平均数） ari...