Advent calendar 2017

5 December

You start at A and are allow to walk left, right, up or down along the grid. The grid continues forever in every direction. After you have walked thirteen units, how many different locations could you be in?


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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

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


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