GRE
The least possible value of the product xy, where x and y are integers satisfying the inequalities
-40
wy
xz
$$\frac{qs}{r}$$
$$r-\frac{1}{r}$$
The number of the odd integers that are perfect square
The number of the even integers that are perfect square
$$(x^{-1})^{-3}$$
$$x^{-4}$$
$$(-7)^{52}$$
$$(-7)^{81}$$
$$(24-25)^{50}$$
$$(77-76)^{-1}$$
$$(-3)^{(x)^{2}}$$
$$(-3)^{(y)^{2}}$$
$$\frac{(-1)^{11n+7}}{(-1)^{5n-2}}$$
-1
25000 +道题目
199本备考书籍