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