GRE
$$x+y+z$$
$$xyz$$
$$\frac{r}{t}$$
$$0$$
The fraction of the goods in the initial inventory that remained at the end of the second day of the sale
$$\frac{3}{10}$$
$$Y_6$$
$$(25^{5})Y_{16}$$
4
k
$$(1)^{5n}$$
$$(1)^{5+n}$$
25000 +道题目
236本备考书籍