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