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@ukmathstrust.bsky.socialOct 13, 2026, 7:00 AM

Problem of the Week 194!

Please do not comment the solution so others can work it out too. Instead, like this post or comment a thumbs up if you think you have the correct answer!

The solution will be posted in the comments on Thursday afternoon.

#Problem #UKMT #Maths

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@percybuttons3.mathstodon.xyz.ap.brid.gyOct 13, 2026, 6:00 AM

Problem for October 13th from the 2026 AMS Daily Epsilon of Math Calendar
@DailyEpsilon
#math #maths #mathematics #mathstodon

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@tuditees.bsky.socialOct 13, 2026, 5:25 AM

Hoy compartimos la camiseta de los números: www.latostadora.com/web/los-nume...

#regalos #ideasregalo #camiseta #sudadera #Tshirt #hoodie #gifts #giftideas #nerd #geek #freak #Matemáticas #Mathematics #Maths #números #numbers #nerdy #nerdytee #geeky #geekytee

@paysmaths.bsky.socialOct 13, 2026, 5:00 AM

13 octobre 1893 : #CeJourLà naissance de Kurt Reidemeister (†08/07/1971), mathématicien allemand dont les travaux portent sur la théorie des groupes, la théorie des nœuds, la topologie combinatoire et la géométrie.
buff.ly/BRQ8SON
#mathématiques #maths #math

@consiliae.bsky.socialOct 13, 2026, 3:30 AM

339 subprime borrowers took a maths test. The ones who scored highest had about two-thirds fewer foreclosure starts. Before your next big money decision, work out the total and what a higher rate does. Watch the full video, link in bio. #maths #money #personalfinance #consiliae

@justmaths.bsky.socialOct 12, 2026, 10:38 PM

I've been thinking .... new post from me!

justmaths.co.uk/did-the-2017...

#maths #curriculumreform

@mathsvault.bsky.socialOct 12, 2026, 7:25 PM

Exit ticket — FDP Equivalence #maths #mathsteacher #UKMathsChat #GCSEMaths #ExitTicket #FdpEquivalence #Reasoning #ProblemSolving

Maths Vault lesson social card
@hosford42.techhub.social.ap.brid.gyOct 12, 2026, 4:54 PM

I love reading knowledgeable math, ML, computer science, statistics, neuroscience, and linguistics posts on Fedi/Mastodon. If you see this and you frequently post about any these topics, please wave hello so I can follow you!

#Math
#Maths
#Mathematics
#MachineLearning
#ComputerScience […]

@paysmaths.bsky.socialOct 12, 2026, 4:05 PM

"En soulageant le cerveau de tout travail inutile, une bonne notation lui permet de se concentrer sur des problèmes plus avancés, et en fait, augmente la puissance mentale." – Alfred North Whitehead (1861–1947)
#citation #mathématiques #maths #math #notation

Portrait photographique d'Alfred North Whitehead, et une citation : "En soulageant le cerveau de tout travail inutile, une bonne notation lui permet de se concentrer sur des problèmes plus avancés, et en fait, augmente la puissance mentale."
@paysmaths.bsky.socialOct 12, 2026, 4:04 PM

"By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and in effect, increases the mental power." – Alfred North Whitehead (1861–1947)
#quote #mathematics #math #maths #notation

Photographic portrait of Alfred North Whitehead, and a quote : "By relieving the brain of all unnecessary work, a good notation sets it free to concentrate on more advanced problems, and in effect, increases the mental power."
@playminesweeper.bsky.socialOct 12, 2026, 3:13 PM

Turn 17 · 1 player moved
🏅 @direprism.bsky.social +3

18 cells left, 2 spares, 6 flagged.
Reply a coordinate, A1 to K11. Everyone who replies opens one.
30 min.
#Minesweeper #gameplay #probability #maths #puzzlegame #classicgames

Minesweeper, turn 17. 11 by 11 grid, rows A to K, columns 1 to 11. 24 mines. 79 of 97 safe cells opened, 6 flagged.
Reading each row left to right: a digit is how many mines touch that cell, 0 is an opened blank, ? is still hidden, F is a cell somebody has flagged as a mine.
A: 2 ? ? ? 2 ? 2 1 1 0 0
B: ? ? ? ? 4 2 2 X 1 1 1
C: ? ? ? ? F 1 1 1 1 1 F
D: ? ? ? ? 3 2 0 0 0 1 1
E: ? ? ? 4 ? 2 2 2 1 0 0
F: ? ? ? ? 3 2 ? ? 1 0 0
G: ? ? 4 F 2 2 3 3 2 1 1
H: 2 ? 2 1 1 1 F 2 2 ? 1
I: 1 1 1 0 0 1 1 2 F 3 2
J: 2 ? 2 1 1 0 0 1 1 2 ?
K: ? ? 2 F 1 0 0 0 0 1 ?
Last move A5 was safe and touches 2 mines.
@mathsvault.bsky.socialOct 12, 2026, 2:30 PM

Discuss — Straight Line Graphs #maths #mathsteacher #UKMathsChat #GCSEMaths #MathsChat #Discussion #RealLifeMaths #Applications #StraightLineGraphs #LinearGraphs #Algebra

Maths Vault lesson social card
@paysmaths.bsky.socialOct 12, 2026, 10:01 AM

Theorem of the Day (October 12, 2026) : Karp’s Theorem (Detail)
Source : Theorem of the Day / Robin Whitty
pdf : buff.ly/PGYRr4D
notes : buff.ly/rtxNit1

#mathematics #maths #math #theorem

Comprehensive presentation of the "Theorem of the Day", starting with a statement of this theorem.

Karp’s Theorem (Detail) : Vertex Cover is NP-Complete.
@koolbadges.co.ukOct 12, 2026, 7:31 AM

STEM Badges - great for Science, coding, engineering & maths clubs & events. www.koolbadges.co.uk... #stemschool #stem #handmade #pinbadge #badges #shopsmall #schoolbadges #science #maths #engineering #tech

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@mathsvault.bsky.socialOct 12, 2026, 7:30 AM

Plenary — Functions #maths #mathsteacher #UKMathsChat #GCSEMaths #Plenary #MathsDiscussion #ProblemSolving #Reasoning #Functions #Ratio #Proportion

Maths Vault lesson social card
@amarois.bsky.socialOct 12, 2026, 7:01 AM

À propos du dump de +700 preprints déposés sur GitHub par #OpenAI.., par D.Larousserie "Nouveau coup de massue d’OpenAI sur les mathématiciens : « Ils ont annihilé mon domaine de recherche »"
#AI #maths #GenAi #science
www.lemonde.fr/sciences/art...

@percybuttons3.mathstodon.xyz.ap.brid.gyOct 12, 2026, 6:01 AM

Problem for October 12th from the 2026 AMS Daily Epsilon of Math Calendar
@DailyEpsilon
#math #maths #mathematics #mathstodon

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@consiliae.bsky.socialOct 12, 2026, 4:31 AM

At an even fork, each branch should be the cube root of a half as wide as its parent: 0.79. Your airways follow that rule, worked out for blood in 1926. #maths #biology

@consiliae.bsky.socialOct 12, 2026, 3:30 AM

Half the risk sounds big. For a rare disease it can mean 1 person in 1,000. Next time a label gives you a percentage, ask what it is a percentage of. Watch the full video, link in bio. #maths #health #statistics #consiliae

@playminesweeper.bsky.socialOct 12, 2026, 12:43 AM

Turn 28 · 1 player moved
🏅 @jamestdg.bsky.social +3

22 cells left, 1 spare, 14 flagged.
Reply a coordinate, A1 to K11. Everyone who replies opens one.
30 min.
#Minesweeper #indiedeveloper #retrogaming #maths #foss #logicpuzzles

Minesweeper, turn 28. 11 by 11 grid, rows A to K, columns 1 to 11. 24 mines. 75 of 97 safe cells opened, 14 flagged.
Reading each row left to right: a digit is how many mines touch that cell, 0 is an opened blank, ? is still hidden, F is a cell somebody has flagged as a mine.
A: F 2 1 1 1 ? ? ? ? 2 ?
B: 1 2 F 1 1 ? ? 1 ? ? ?
C: 0 1 1 1 1 2 ? ? ? 2 ?
D: 0 0 1 1 2 ? ? ? ? ? ?
E: 0 0 1 F 3 ? 3 ? 2 F ?
F: 1 1 2 3 ? ? F 2 1 2 F
G: X 1 2 F ? ? X 2 0 1 1
H: 2 2 2 F F ? 1 1 0 0 0
I: F 1 1 3 F 3 1 1 0 1 1
J: 2 2 1 1 1 2 F 1 0 1 F
K: 1 F 1 0 0 1 ? 1 0 1 ?
Last move E7 was safe and touches 3 mines.