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