mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2018

2 December

Today's number is the area of the largest dodecagon that it's possible to fit inside a circle with area \(\displaystyle\frac{172\pi}3\).

Show answer

Archive

Show me a random puzzle
 Most recent collections 

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

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2020