Advent calendar 2017

13 December

A book has 754 pages (numbered 1 to 754: page 1 is on the left of the first double page spread, and page 754 is on the right of the final double page spread). What do the page numbers of the middle two-page spread add up to?
Tags: numbers


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


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


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