mscroggs.co.uk

mscroggs.co.uk

blog puzzles academic talks contact subscribe ↓ ☰ ↓

Comment

Comments

Comments in green were written by me. Comments in blue were not written by me.

2018-12-09

Loved these puzzles! I have no idea how to approach #9, though. Will the solutions be posted at any point? Or, can anyone provide a hint to how to approach it?

Seth
on /blog/59

2018-12-10

@Seth: try solving it for 3a+4b, 3a+5b, 4a+5b, etc and look for patterns

Matthew
on /blog/59

Archive

Show me a random blog post

2025

Mar 2025

How to write a crossnumber

Jan 2025

Christmas (2024) is over
Friendly squares

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

gerry anderson manchester science festival fractals standard deviation turtles platonic solids mathsjam weak imposition finite group squares misleading statistics tmip signorini conditions martin gardner numerical analysis royal baby matrix of minors harriss spiral finite element method manchester advent calendar matrix of cofactors radio 4 craft rugby sound palindromes chalkdust magazine sobolev spaces cambridge propositional calculus dates go christmas card puzzles folding paper wool approximation interpolation big internet math-off national lottery recursion hexapawn dataset asteroids correlation chebyshev game of life mathsteroids runge's phenomenon pizza cutting world cup bempp hats bubble bobble chess guest posts numbers pascal's triangle trigonometry captain scarlet mathslogicbot crossnumber hyperbolic surfaces matt parker php stickers pythagoras ternary dinosaurs noughts and crosses statistics tennis royal institution boundary element methods javascript ucl binary braiding matrix multiplication football error bars london python accuracy electromagnetic field 24 hour maths data visualisation databet bots quadrilaterals folding tube maps probability simultaneous equations christmas stirling numbers realhats exponential growth inverse matrices inline code video games graphs draughts phd polynomials nine men's morris mean youtube crossnumbers fonts weather station reuleaux polygons zines news programming the aperiodical golden spiral oeis rhombicuboctahedron crochet crosswords curvature bodmas pi latex errors talking maths in public machine learning light speed datasaurus dozen books flexagons sport data sorting gather town estimation pi approximation day friendly squares people maths map projections menace kings live stream final fantasy geogebra golden ratio matrices computational complexity reddit hannah fry dragon curves edinburgh geometry preconditioning cross stitch london underground fence posts logic arithmetic plastic ratio frobel wave scattering countdown raspberry pi convergence logs newcastle games pac-man anscombe's quartet coins game show probability gaussian elimination determinants triangles logo european cup a gamut of games graph theory regular expressions

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025