mscroggs.co.uk
mscroggs.co.uk

subscribe

Advent calendar 2015

21 December

This year, I posted instructions for making a dodecahedron and a stellated rhombicuboctahedron.
To get today's number, multiply the number of modules needed to make a dodecahedron by half the number of tube maps used to make a stellated rhombicuboctahedron.

Show answer

Archive

Show me a random puzzle
 Most recent collections 

Advent calendar 2024

Advent calendar 2023

Advent calendar 2022

Advent calendar 2021


List of all puzzles

Tags

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

Archive

Show me a random puzzle
▼ show ▼
© Matthew Scroggs 2012–2025