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