单选题Is ax＜a+x?10＜x＜12a is a positive integer.
单选题120的因子个数是多少?
单选题Platinum is a relatively rare metal vital to a
单选题Is n an integer?13n is an integer.22n is an integer.
单选题A $10 bill 1,000 cents was replaced with 50 coins having the same total value. The only coins used were 5-cent coins, 10-cent coins, 25-cent coins, and 50-cent coins. How many 5-cent coins were used?1
单选题A country’s per capita national debt is its national debt divided by its population．Is the per capita national debt of Country G within ＄5 of $500? 1 Country G’s national debt to the nearest S1，000，00
单选题Sandra saves the same amount of money each month in an account for her children future college expenses. Ten years from now, will Sandra have saved at least $12,000 more than she currently has in the
单选题Which of the following most logically completes
单选题If x is a positive integer, how many positive integers less than x are divisors of x ?1 x2 is divisible by exactly 4 positive integers less than x2. 2 2x is divisible by exactly 3 positive integers le
单选题今年5月，上海某家汽车制造厂上线了人们期盼已久的新轿车，在这些轿车中，有20％是红色的，80％是蓝色的；有25％的车排放量是1.6升，有75％的车排放量是1.8升。如果在100辆轿车中有10辆车是红色并且排放量为1.6升，那么有多少辆车是蓝色并且排放量为1.8升?
单选题If n=p2 and p is a prime number greater than 5，what is the units digit of n2?
单选题If 8x=3y and xy≠0, what is the ratio of x8 to y3?
单选题In a certain card game, an ace counts one point, face cards count ten points, and all other cards count their face values. A player must play at least one card on each turn, and his score on a turn is
单选题把0-15这16个数分别写在卡上放到一个盒子里，如果从这个盒子里无返回地取出卡片，问至少取出多少个数才能保证有两个卡片上的数目和是16?
单选题In the standard x,y coordinate plane, what is the slope of the line containing the distinct points P and Q?1 Both P and Q lie on the graph of |x| + |y| = 1. 2 Both P and Q lie on the graph of |x| + |y
单选题What was the units digit of 1713-17?