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