1)我花了5分钟在这题,还是做不出答案。考试时一定脑缺氧了。 peasants mix 1.5pound cashew nuts and 6 pound brazil nuts. the resulting snacked is sold at 1.5 dollar per 0.25 pounds. to the peasants, only brazil nuts are counted as cost. The profit is 50% of the cost. Ask the cost is how much per pound. 2)几个分数相乘最接近几的,有一个分子是101/801的,答案是1/16 然后就碰到一堆很简单的 3) 125% of 5. 答案是6。25 4)jim and marry (名字忘了,乱起的)are the 2 newest member of a group. The group has 10 members. choose 2 people from the group, what is the possibility that the 2 members are jim and marry? 答案: 45 5) (几经里有) 一个边长分别是x,y的铁片分别以x或y为高,绕圆柱体,问体积差 6) (几经里有) 图形题,有点像一个直角梯形+一个等腰三角形(三角形底边是梯形的斜边),问面积, 答案是100 7) (几经里有) 一个数不能被0除,问这个数的4次方,被10除余数有几种可能, 答案是3种 8) (几经里有) 一个戏院第一排16个座位,后面每排多两个,最后一排64,问一共多少座位。 答案1000 9) (几经里有)一个等腰直角三角形内接在一个圆里,问一段铉和直角边夹的面积 10) DS: ask if the perimeter of the square is less than 40 a) there is a circle inscribed in the square whose diameter is less than 10 b) the square is circumscribed about a diameter whose diameter is more than 3. 我选A 11)(几经里有)种两种蔬菜,一种成本多少,另一种成本多少,一种每株占地4各单位,另一种每株占地1各单位,问其中一种种了多少。答案我记得是20吧 12))(几经里有)一个面积是1的square,问下面哪两点可能在square得边框上。答案是D or E,既不清了。就是算每组两点的距离要小于根号2
13)有n,o,p,q,r,s,t七個數字,平均數是11,另外n,o,p,q,r平均數是10,q,r,s,t平均數是8,問q+r=? 很簡單 5*10+4*8-7*11=5
14)DS:有一組數字最小是1,問range是否大於3 1. Mean=4 2. Median=4 我選A |