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ArchimedesExercise
BinomialCoefficient
CantorSet
CarbonDating
Circumcircle
ConstructingAnOctagon
ConstructionsUsingMatchsticksOnly
DedekindCut
DiophantineEquation
DominoCovering
EIsIrrational
EuclideanAlgorithm
Event_20131123_SecondaryCPD
Factorial
Flexatube
FoldingSpecialAngles
Hexahexaflexagon
Hexatetraflexagon
Horizon
HowHighIsThatTree
Identity
Incircle
Inverse
JoyceHattonMemorialBursaries
MathematicalMovingChairs
MersennePrime
MobiusBand
ModellingSunriseAndSunsetTimes
Nrich
OptimalPricing
OverhangingBlocksProblem
Parabola
PerfectNumber
Polyhedron
RingOfTetrahedra
RussellsParadox
SlicingTheCake
SpotThePot
SurveyingChallenge
TheScribbleTheorem
TyingAPentagon
WhatDayOfTheWeek