GRE
The total number of 4-digit positive integers that can be formed using only the digits in set S
The total number of 3-digit positive integers that can be formed using only the digits in set T
14!
15!-14!
The radius of the circle
5.5
The standard deviation of all the numbers in Set Q
The standard deviation of all the numbers in Set R
The value at the 75th percentile of the distribution of X
750
25000 +道题目
236本备考书籍