GRE
The average (arithmetic mean) of $$\frac{1}{S^{2}}$$, $$\frac{1}{S}$$, $$S$$, and $$S^{2}$$
$$2S$$
The remainder when 754,975,376 is divided by 4
The remainder when 701,864,294 is divided by 4
The average (arithmetic mean) of the integers in list K
13
x+y+z
$$\frac{1}{x+y+z}$$
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