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.

2016-12-12

I think problem 5 needs clarification. By numbers, you mean positive integers? Does the sum just consisting of the number 35 count? Are these ordered or unordered sums?

Thank you for all your hard work on this, it's a lot of fun.

Mike
on /blog/36

2016-12-13

@Mike: I've added a clarification to puzzle 5. Glad you're enjoying the puzzles!

Matthew
on /blog/36

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

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

Archive

Show me a random blog post
▼ show ▼

© Matthew Scroggs 2012–2025