相对于国外考生,我们在新GRE数学题上面还是占有很大优势的。要想在新GRE数学考试中取得优异的成绩,就需要各位考生备考时不要在细节上丢失分数,平时复习时要多加注意,并且认真复习GRE数学疑难问题。下面我们来看一下新GRE数学疑难问题的解答思路。
二、常见数学疑难几经解答思路
1.从2 3 4 5 6 7 8 9中取数字组成三位数号码,assign to 330 employee, 数字不重复, 问多少号码unassigned?
解:P==336
336-330=6
2.一个工作W,X做要比Y做少两天,X,Y一起做4/3W要3天,求X单独做2W要几天?
解:令W/X=x,W/Y=y,则x+2=y
/=3
两式连立化去y,即可解得x
3.=2^x3^y5^z 代表的是n的函数,x,y,z,都是positive integer, and x,y,z,分别代表n的百位,十位和个位,问如果f=9f,m-v=?
解:因为f=9f,所以两数百位个位都相同,令a为m的十位,b为n的十位则可知,/=9
解得a-b=2
所以m-v=210=20
4.10的n次方减38所得数的digit sum 为350. n=?
解:9+=350
5.1到n是连续整数, 1到n 数的乘积能被990 整除, 问n 最少是?
解:990=11109,所以n不能小于11
以上就是GRE数学疑难问题解答思路介绍,新GRE数学考试虽然不难,但也不容轻视。往往有轻敌的数学高手数学却答得不理想的情况发生。因此,要想拿到新GRE数学满分,就要严格要求自己,多下功夫,注意总结,争取拿到满分。
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