单选题某个人在买价值500元书的时候，先首期付了100元，剩下的带利息的余款采用如下方式支付：连续30个月每月支付15元，最后再付10元，问最后所付利息是借款的百分之几?
单选题Which of the following most logically completes
单选题在一个由20个连续整数组成的递增数列中，前面10个整数的和为380，求数列中所有整数的和?
单选题Many leadership theories have provided evidence
单选题A circular rim 28 inches in diameter rotates the same number of inches per second as a circular rim 35 inches in diameter．If the smaller rim makes X revolutions per second，how many revolutions per min
单选题下面哪个方程在坐标系中表示的直线只通过一个横坐标和纵坐标都为整数的点?
单选题On a certain number line, if 8 is distance of 18 from n, and 17 is he distance of 9 from n, then which of the following could be n?
单选题In the rectangular coordinate system, line k passes through the point n,-l. Is the slope of line k greater than zero?1 Line k passes through the origin. 2 Line k passes through the point 1 ,n + 2.
单选题After receiving numerous complaints from
单选题When the integer n is divided by 17，the quotient is x and the remainder is 5．When n is divided by 23，the quotient is y and the remainder is 14．Which of the following is true?
单选题在盒子1中有6个红球，4个白球；在盒子2中有3个白球，5个红球，问从这两个盒子中分别摸出1个都是白球的概率?
单选题Curator: If our museum lends Venus to the Hart
单选题What is the standard deviation of the three numbers x+5, y+5, z+5?1The standard deviation of x and y is greater than 0.3.2The standard deviation of x, y and z equals to 0.2.
单选题Patrick usually provides child care for six
单选题The median of 21 different integers is 17. Which of the following is the least possible of the range of these integers?
单选题一个人掷飞标，击中靶心的概率为0.7，如果这个人连续掷4次飞标，其中有2次击中靶心的概率是多少?
单选题In the equation b=ka+3, k is a constant. If the possible solutions are in the form a, b, is 2, 3a solution to the equation?11, 4 is a solution of the equation b=ka+2.23, 5 is a solution of the equatio
单选题A large flower arrangement contains 3 types of flowers: carnations, lilies, and roses. Of all the flowers in the arrangement, 12 are carnations, 13 are lilies, and 16 are roses. The total price of whi
单选题集合{1，2，3，4，5}有多少个包含元素1的子集?
单选题已知自然数a，b，c，其中c≥3，a除以c余数为1，b除以c余数为2，那么ab除以c余数为多少?