At the end of October 2020 a group of well-known maths communicators (Zoe Griffiths, Samuel Hansen, Matthew Scroggs, Ben Sparks and Katie Steckles) organised a twenty-four hour marathon of maths magic, running alongside Mark Watson’s 24-hour comedy show Watsonathon and aiming to raise money for the charity Turn2Us which helps people in low-income jobs & gives out emergency grants, and the Comedy Support Act, supporting comedians and other performers who have little/no income during the ongoing Covid-19 pandemic. It was presented via Katie Steckles’ YouTube channel.
I was contacted by Zoe who asked if I’d like to take one of the 48 half-hour slots. You can see the result in the player below! This is just my bit; a playlist will be created shortly that will allow you to watch the entire 24 hours. I’ll update this page with a link to that when it is released.
My “trick” was to ask Katie to pick a 2-digit number, raise it to the fifth power and tell me the result. I then – quick as a flash – worked out her original number. Then I told her how I did it!