GRE
$$(-1)^{n+1}$$
1
$$(-1)^{f(4m+1)}$$
$$(-1)^{f(4m+2)}$$
$$k$$
$$10$$
The number of even integers between $$x$$ and $$y$$
The number of odd integers between $$x$$ and $$y$$
w+z
10
The remainder when N is divided by 3
The remainder when N is divided by 17
The remainder when $$k^{2}-k$$ is divided by $$2$$
$$0$$
The remainder when $$10^{8}$$+$$10^{9}$$+$$10^{10}$$+$$10^{11}$$ is divided by 11
0
The remainder when n is divided by 7
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