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
以上便是新GRE数学常见疑难解答思路的几道例题解析,希望考生在看完之后能更好的运用!
Read the tea leaf?
Children are not cookie cutters
What is an entrenched issue?
Con artist?
Stopped in her tracks?
Gaming the system
Soul searching
Gold dust
Social fabric?
Earn your keep?
Close to the bone
A bucket list goal?
伪造的屠呦呦“致辞”为何这么火?
Donald Trump is “a…birther and bully”
Place to blow off some steam?
Tip of the iceberg?
Right side of history?
Going back to the drawing board?
In the doghouse?
High wire act
Hit the hay?
Rule of thumb?
Pants are on fire
Bell cow?
On a wing and a prayer
Swan song?
Sacrificial lamb
扒一扒英语中箴言的内涵
In the cross hairs?
We just got our head handed to us
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