# Puzzles

## Archive

Show me a random puzzle**Most recent collections**

#### Sunday Afternoon Maths LXVII

Coloured weightsNot Roman numerals

#### Advent calendar 2018

#### Sunday Afternoon Maths LXVI

Cryptic crossnumber #2#### Sunday Afternoon Maths LXV

Cryptic crossnumber #1Breaking Chocolate

Square and cube endings

List of all puzzles

## Tags

coins angles menace cryptic clues polygons grids indices rugby sport taxicab geometry cards books sums proportion cryptic crossnumbers logic trigonometry regular shapes crosswords division means remainders integers balancing perimeter odd numbers crossnumbers sum to infinity numbers cube numbers bases parabolas doubling averages 3d shapes fractions calculus area algebra speed digits 2d shapes triangles volume triangle numbers money irreducible numbers chocolate probabilty arrows routes palindromes christmas factors floors addition ellipses clocks dodecagons percentages symmetry hexagons chalkdust crossnumber shapes probability multiples graphs integration complex numbers coordinates mean unit fractions partitions spheres wordplay rectangles advent star numbers dates quadratics circles planes perfect numbers prime numbers chess shape squares square numbers pascal's triangle geometry time sequences games multiplication square roots surds functions number dice people maths factorials folding tube maps scales lines colouring ave differentiation## 5 December

I make a book by taking 111 sheets of paper, folding them all in half, then stapling them all together through the fold.
I then number the pages from 1 to 444.

Today's number is the sum of the two page numbers on the centre spread of my book.