GRE
The standard deviation of List M
The standard deviation of List N
(40!)(30!)
(60!)(20!)
The tens digit of ($$4^{100}$$)($$5^{99}$$)
The tens digit of ($$4^{100}$$)($$5^{101}$$)
The least possible value of n
12
The ratio of the cost of 1 of the health magazines to the cost of 1 of the news magazines
$$\frac{4}{5}$$
$$x$$
$$6$$
The number of square feet in 1 acre
40,000
25000 +道题目
236本备考书籍