mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2016

15 December

A book has 386 pages. What do the page numbers on the two middle pages add up to?
Tags: numbers

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

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

Archive

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