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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Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

Sunday Afternoon Maths LXV

Cryptic crossnumber #1
Breaking Chocolate
Square and cube endings

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


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