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