GRE
$$QR$$
$$RS$$
$$(x-y)^{2}$$
$$x^{2}+y^{2}$$
The number of the subsets of $$S_8$$
The number of the subsets of $$S_9$$ that contain the integer 9
x
y+z
x+y
90
$$(a-b)^{2}$$
$$(a+b)^{2}$$
The remainder when $$k^{2}$$ +n is divided by 2
The remainder when $$k^{n}$$ is divided by 2
The remainder when $$3^{64}$$ is divided by 8
1
25000 +道题目
199本备考书籍