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