mscroggs.co.uk
mscroggs.co.uk

subscribe

Puzzles

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 2020

Advent calendar 2019

Sunday Afternoon Maths LXVII

Coloured weights
Not Roman numerals

Advent calendar 2018


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2021