2 December

What is the maximum number of lines that can be formed by the intersection of 30 planes?


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


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