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Problem Topic Difficulty Popularity
Two Touching Circles Geometry TBD Hot
Squares and Sums Number Theory TBD Hot
Changing Mass Classical Mechanics TBD Hot
An Interesting equation Algebra TBD Hot
Max the length Number Theory TBD Hot
Infinite tangents Geometry TBD Hot
Can the angle take any value? Geometry TBD Hot
Logs and Graphs Algebra TBD Hot
Cannonball's orbit Classical Mechanics TBD Hot
Calculator is for the dull Algebra TBD Hot