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