GRE
The greatest positive integer $$n$$ for which $$54$$ is divisible by $$3^n$$
The greatest positive integer $$k$$ for which $$192$$ is divisible by $$3^k$$
The average (arithmetic mean) of the greatest number and the least number in list S
5 more than the least number in list S
The least possible value of the product $$xy$$, where $$x$$ and $$y$$ are integers satisfying the inequalities
$$-40$$
$$\frac{n+2}{n+1}$$ - $$\frac{n+1}{n}$$
0
25000 +道题目
269本备考书籍