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.

2023-01-09

In question 3 the sum of the red numbers is 369, is there a typo?

(anonymous)
on /blog/100

×1

×2

×2

×2

×2

2023-01-09

@(anonymous): There was a typo - I've just corrected it

Matthew
on /blog/100

×3

×3

×3

×3

×3

Archive

Show me a random blog post

2026

Feb 2026

Christmas (2025) is over

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

Tags

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2026