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 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

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

Archive

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