本人文科生,大学法学专业,一点数学没碰,该怎么办啊,脑子就是转不过弯来,看到DS题就头疼,这次数学好低43,这应该是最低分数了吧,头疼 AA: “The Easy Credit Company would gain an advantage over competing credit card services if we were to donate a portion of the proceeds from the use of our cards to a well-known environmental organization in exchange for the use of its symbol or logo on our card. Since a recent poll shows that a large percentage of the public is concerned about environmental issues, this policy would attract new customers, increase use among existing customers, and enable us to charge interest rates that are higher than the lowest ones available.”
今天碰到数学的机经不是很多,大概几道题,因为只做了JJ前200道, 把今天碰到的题目点一下: 下列哪个n使 n+1/n 最大? A:0.0002 B:0.0007 C:0.005 D:0.8 E: 2 (C、D编的,但意思上是这样) A、B为正整数,(A+0.0001)^4*(B+0.0001)^5与32大小。 条件一:A=2 条件二:B=2 选B 3.有一个正方形,内切于一个圆,这个圆有内切于另一个正方形,问这个圆的周长是不是大于10.条件一:小正方形边长大于根号2(数字不确定)条件二:大正方形边长大于4。答案是B 4.一个圆,如图,中间的三角形是等腰三角形,AC边在直径上,知道圆的半径R,求阴影部分面积 5.PS:一共有500只鸟or其他什么动物,其中24%的鸟>=154g,在>100g的鸟当中,60%>=154g,问鸟的重量最有可能的中位数是多少? A.92 B.120 C.125 D.130 E154 6. a^n-1)/(a-1)=1+a+a^2+.......+a^(n-1),又知道1+7+7^2+......7^8= 6325601,那么7^9=? 7.D.S A,B两台水泵,各自速率稳定,一起抽一箱6单位的水需要3小时,问A单独抽水需要耗时多久? A. A的速度比已知 B. B的单位抽水速度已知 8. A handbag company produce 4 handbags: abcd with a combination of feathures: leder, stripe, and zip(totalled 3 features , let me name them features ABC). Table A and B 3 B and C 3 A and C 5 with three features 3 9. 5个seniors抽出2个, 6个junior抽出3个组成一个combination.有多少种combination。 10. 一个矩形花园一边长80m,走过对角线长120m,问矩形的周长近似于几米? 11. 一个人有5分,10分,25分硬币,10分的个数是25分的3倍,硬币一共价值3.2元,一共有29个硬币,问有几枚5分硬币? A.3 B.6 C.9 D.14 E.16