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