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Hello there. This section of the website is for people who've read / are reading my book 'Maths Tricks to Blow Your Mind' and would like some further information on any of the puzzles / problems / people I briefly mention. If there's anything you think I've left out, drop me an email! Introduction A list of the most retweeted tweets of all time: LINK The Structural Virality of online diffusion - Goel et al LINK My popular cheese tweet LINK Chapter 1 Ben Stephens' percentages tweet LINK Website claiming 90% success rate for denmark elephant trick LINK Chapter 2 David Acheson's excellent book 1089 and all that LINK Huffington Post article about on/off train SATs question LINK Nice blog post about the 'Mystery Calculator' LINK David Copperfield clock trick LINK James Grime's excellent paper on the Kruskal count LINK Chapter 3 The excellent Rob Eastaway explains Hannah's Sweets LINK Dr Frost's Hannah's Sweets style question generator LINK Hans Rosling: Population growth box by box LINK Me singing about exponentially increasing love LINK My exponential twitter thread - give it a like? LINK The Aperiodical article about Claire Longmoor and the orchestra question LINK Dreadful Mirror article about Mum stumped by daughter's homework LINK Lovely proof of Chika's test by Simon Ellis LINK Chapter 4 The TES video with Jo Morgan & Craig Barton that largely inspired this chapter LINK The Keane song on Chris Moyles' quiz show LINK James Tanton elaborates on the vinculum LINK Chapter 5 My original discussion with CBeebies re: Apple Tree House (love you CBeebies...) LINK Alon Amit's excellent piece about the very hard fruit equations LINK My Collatz twitter thread. See if you can follow it all the way to Phil Collins! LINK Chapter 6 Ed Southall's Pink Triangle here LINK and the many solutions here LINK Nice visualisation of the Henk Reuling circle puzzle LINK The Catriona Agg puzzle I discuss, giver her a follow, her stuff is gold LINK Conclusion A decent piece about Gracie Cunningham, the original video is easy to google LINK The original miracle sudoku video aka the best 25 minutes you'll ever spend LINK And of course, the solution to the miracle sudoku in my book. I must be honest here... I never got round to fully completing it. It's really hard! So here are two attempts I've had sent to me since publication, the first by Mimi Cheung and the second by Gil Wright. I don't think they can both be right, but I'll post both here while I work out which - if either! - is correct.  
8 Comments
Andrew
31/5/2022 10:35:50 pm
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Adam Quinn
19/11/2022 11:28:14 am
The missing pound answer: Price is p, tip is t, and change is c. P+t+c=£30, and they said they paid 27 which is p+t. But they also said they tipped the man £2, which is p+2t. So they added the tip into the price twice, not once. Going back, p+t=£27, and t+c=£30-p which means that there is no missing pound. Also another way is to imagine they split the £25 for the teapot.£25÷3=8r1. So 2 paid £8, and 1 paid £9. In conclusion, p+t+c=£30, but p+2t=£29, thus creating the puzzle Leave a Reply. |
