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