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 

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


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


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