GRE
The distance between P and Q
The distance between Q and R
|$$m$$| - |-$$k$$|
|$$k$$| - |-$$m$$|
The sum of the first 99 terms of the sequence
The last term of the sequence
The average (arithmetic mean) of x, y, z, w
2π
A's salary
C's salary
The greatest prime factor of 50
The greatest prime factor of 60
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