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