答案好像是416.7
SA: agree Hb=10000/6--10000/8= 416.7
74. 一个人6年前存钱,算复利,问本金和现在比的ratio
如果以12%算,3年的时候有多少
本金是多少 答案A
SA: agree principal 1.12^3=XXX xxx/principal 可求
75. the average of 4,8,y is less than or equal to 80, what is the greatest possible value of y?
SA: 803-4-8=228
76. 等边三角形内切圆面积9v3,圆面积?
SA:SA:12派 三角形边长6 园半径2根号3
题目貌似有问题 见稿一11道 估计应该是外接圆
77. 10 种邮票,Gorge 有三种,从这10种里选2种,the probability that Gorge has neither of them.
SA: agree 7/106/9=7/15
78. A, B and 3 kids are seated in front of the class, how many 排法 if A or B are seated right in the middle? )
SA: agree, 稿二42
79. .鹅蛋问题,隐约记得以前机经里有。一共6804个蛋,是这么得来的,get 2 eggs from 90 percent of the nests which have
5 or more eggs, and no egg from other nests. 知道有320个nests which have 4 or less eggs. 问一共多少nests?
SA:6804/2/0.9+320=3780
80. 一个店 sell medium and large 红衬衫还有medium and large白衬衫. It sold twice as many medium red shirts as large white shirts and 3 times as many medium white shirts as large red shirts.
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