Advent calendar 2015

10 December

This number is divisible by 2. One more than this number is divisible by 3. Two more than this number is divisible by 5. Three more than this number is divisible by 7. Four more than this number is divisible by 11. Five more than this number is divisible by 13.


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Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

List of all puzzles


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


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