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