Rubik's Clock
A puzzle consisting of 18 small clocks. There are 
possible configurations, although not all arerealizable.
References
Dénes, J. and Mullen, G. L. ``Rubik's Clock and Its Solution.'' Math. Mag. 68, 378-381, 1995. Zeilberger, D. ``Doron Zeilberger's Maple Packages and Programs: RubikClock.'' http://www.math.temple.edu/~zeilberg/programs.html.
- Basler Problem
- Basset Function
- Batch
- Bateman Function
- Batrachion
- Bauer's Identical Congruence
- Bauer's Theorem
- Bauspiel
- Bayes' Formula
- Bayesian Analysis
- Bayes' Theorem
- Bays' Shuffle
- Beam Detector
- Bean Curve
- Beast Number
- Beatty Sequence
- Beauzamy and Dégot's Identity
- Bee
- Behrens-Fisher Test
- Behrmann Cylindrical Equal-Area Projection
- Bei
- Bell Curve
- Bell Number
- Bellows Conjecture
- Bell Polynomial