Click here to win prizes by solving the puzzle Advent calendar.
Click here to win prizes by solving the puzzle Advent calendar.



3 December

What is the volume of the smallest cube inside which a rectangular-based pyramid of volume 266 will fit?


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 Most recent collections 

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
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Advent calendar 2018

Sunday Afternoon Maths LXVI

Cryptic crossnumber #2

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


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