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