Advent calendar 2015

Archive

Show me a random puzzle

Tags

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