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