GRE
The average of a, b and c
$$\frac{1}{2}$$
$$x^{2}$$+$$y^{2}$$
$$1$$
∠B
∠C
The thousands digit of $$\frac{n}{8}$$
$$7$$
The remainder when 11,999,999 is divided by 12
11
$$xy$$
$$10$$
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