GRE
The units digit of $$3n$$
The units digit of $$n^{3}$$
The square of the average (arithmetic mean) of $$x$$, $$y$$ and $$z$$
The average (arithmetic mean) of $$x^{2}$$,$$y^{2}$$and $$z^{2}$$
The standard deviation of the 30 ratingss
17
25000 +道题目
245本备考书籍