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Mathematics 18,658 rep 3 gold badges12 silver badges28 bronze badges
Operations Research 10,640 rep 1 gold badge9 silver badges35 bronze badges
Puzzling 3,654 rep 1 gold badge8 silver badges25 bronze badges
MathOverflow 1,868 rep 1 gold badge6 silver badges15 bronze badges
Area 51 101 rep 1 bronze badge

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