GRE
The remainder when $$k^{2}$$ +n is divided by 2
The remainder when $$k^{n}$$ is divided by 2
The number of unique prime factors of 27
The number of unique prime factors of 12
$$x^{2}$$+$$y^{2}$$
$$1$$
$$x$$ +$$x^{-1}$$
2
$$m$$
$$-2$$
$$\frac{BD}{AB}$$
$$\frac{DC}{BC}$$
The area of sector ABD
The area of triangle ABC
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