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