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crossnumbers remainders speed combinatorics binary pascal's triangle percentages expansions functions digits area doubling cubics parabolas sums dice chocolate proportion odd numbers graphs polynomials menace rectangles cube numbers squares money probabilty consecutive numbers albgebra geometry matrices gerrymandering ave division shape books wordplay indices trigonometry means routes irreducible numbers square roots logic regular shapes advent digital clocks cryptic clues lines complex numbers angles hexagons axes games calculus cryptic crossnumbers triangle numbers median sport spheres time fractions crossnumber addition symmetry pentagons digital products quadrilaterals dates cards sequences determinants integers prime numbers circles perimeter coins unit fractions palindromes tangents chalkdust crossnumber decahedra ellipses clocks partitions multiples multiplication number perfect numbers people maths numbers even numbers factors algebra arrows polygons sum to infinity surds star numbers dodecagons consecutive integers folding tube maps 2d shapes geometric means sets shapes planes range bases tiling floors square numbers coordinates elections crosswords christmas products grids quadratics chess balancing 3d shapes scales factorials mean the only crossnumber colouring tournaments probability rugby integration geometric mean triangles dominos averages differentiation volume taxicab geometry