mscroggs.co.uk
mscroggs.co.uk

subscribe

Blog

 2018-12-08 

Christmas card 2018

Showing all comments about the post Christmas card 2018. To return to the blog post, click here.

Comments

Comments in green were written by me. Comments in blue were not written by me.
@Carmel: It's not meant to check your answers. It only shows up red if the number you enter cannot be split into valid pairs (eg the number has an odd number of digits or one of the pairs of digits is greater than 20).
Matthew
                 Reply
The script for checking the answers doesn't work properly
Carmel
                 Reply
Thank you Shawn!
SueM
                 Reply
So satisfying!
Heather
×1                 Reply
Great puzzle problems! Hint on #9: try starting with an analogous problem using smaller numbers (e.g. 3a + 10b). This helped me to see what I had to do more generally.
Noah
   ×1              Reply
@Seth: try solving it for 3a+4b, 3a+5b, 4a+5b, etc and look for patterns
Matthew
                 Reply
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
                 Reply
Blaine said I'd like the puzzle, and he was right, too.
Margaret G
×1                 Reply
Great puzzles. Especially enjoyed #9. Thanks for the entertainment!
John
×1                 Reply
Think I got it! A sure sign of spring. number 9 was a struggle.
Mike
×1                 Reply
Someone told me I would like this puzzle and they were right!
Blaine
×1                 Reply
 Add a Comment 


I will only use your email address to reply to your comment (if a reply is needed).

Allowed HTML tags: <br> <a> <small> <b> <i> <s> <sup> <sub> <u> <spoiler> <ul> <ol> <li> <logo>
To prove you are not a spam bot, please type "theorem" in the box below (case sensitive):

Archive

Show me a random blog post
 2024 

Feb 2024

Zines, pt. 2

Jan 2024

Christmas (2023) is over
 2023 
▼ show ▼
 2022 
▼ show ▼
 2021 
▼ show ▼
 2020 
▼ show ▼
 2019 
▼ show ▼
 2018 
▼ show ▼
 2017 
▼ show ▼
 2016 
▼ show ▼
 2015 
▼ show ▼
 2014 
▼ show ▼
 2013 
▼ show ▼
 2012 
▼ show ▼

Tags

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

Archive

Show me a random blog post
▼ show ▼
© Matthew Scroggs 2012–2024