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