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