GRE
$$x$$
30
The length of the fourth side of a quadrilateral if the length of each of the other three sides is 3
3
The standard deviation of the 3 numbers x, x+1, and x+70
The standard deviation of the 3 numbers x+ 10, x+11, and x+80
The number of different seating arrangements of 4 people around a circular table
8
25000 +道题目
245本备考书籍