单选题There are 120 employees in a certain company. If 36 of the employees are in the union, what percent of the employees are not in the union?
单选题If cubical blocks in a display are stacked one on top of the other on a flat surface, what is the volume of the stack of blocks in cubic centimeters?1 The volume of the top block is 8 cubic centimeter
单选题一个口袋内装有3个小球，另一个口袋内装有5个小球，这些小球颜色各不相同。①如果从两个口袋内各取1个小球，有多少种不同的取法?②如果从两个口袋内任取1个小球，有多少种不同的取法?
单选题在10件产品中，有7个正品和3个废品，求任取一个分别是正品和废品的概率是多少?
单选题If x is an integer, then the least possible value of | 128-5x | is
单选题Each of the integers from 0 to 9, inclusive, is written on a separate slip of blank paper and the ten slips are dropped into a hat. If the slips are then drawn one at a time without replacement, how m
单选题A是一个由5个不相同的正整数组成的集合，B是一个由4个不相同的正整数组成的集合，并且B是A的子集。问A、B的下面哪一个是不可能相同的?
单选题A computer can perform 1，000，000 calculations per second．At this rate，how many hours will it take this computer to perform the 3．6 × 1011 calculations required to solve a certain problem?
单选题A novelist pays her agent 15% of the royalties she receives from her novels. She pays her publicist 5% of the royalties, plus a yearly fee. Did the novelist pay more to her agent last year than she pa
单选题The sum of the first 100 positive integers is 5,050. What is the sum of the first 200 positive integers?
单选题Which of the following most logically completes
单选题A product that represents a clear technological
单选题What is the value of xyz? 1 x = y2 and z = 2x5. 2 xz=52 and 1y=110.
单选题At a certain university recreation center, a member can receive a 30-minute massage, a 60-minute massage, or a 90-minute massage, and is charged $0. 50 per minute for each massage. A member receiving
单选题某教授给学生打分，一共有a，b，c，d，e 5个档次。问至少有多少个学生才能保证有6个人拿到同样的分数?
单选题n percent of 1007 is
单选题Sprinklers are being installed to water a lawn. Each sprinkler waters in a circle. Can the lawn be watered completely by 4 installed sprinklers?1 The lawn is rectangular and its area is 32 square yard