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.
Tags: numbers, books


Show me a random puzzle
 Most recent collections 

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

List of all puzzles


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


Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2019