mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2018

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

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2025

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2026