![MathsAppeal on Twitter: "Today, July 22 can be written as 22/7, which is an approx. of Pi so... 🎉Happy Pi Approximation Day!🎉 To celebrate @mathsappeal co-hosts @Bobby_Seagull & @DoTheMathsThing set the @BBCr4today # MathsAppeal on Twitter: "Today, July 22 can be written as 22/7, which is an approx. of Pi so... 🎉Happy Pi Approximation Day!🎉 To celebrate @mathsappeal co-hosts @Bobby_Seagull & @DoTheMathsThing set the @BBCr4today #](https://pbs.twimg.com/media/EdgpROrXsAIJxR-.jpg:large)
MathsAppeal on Twitter: "Today, July 22 can be written as 22/7, which is an approx. of Pi so... 🎉Happy Pi Approximation Day!🎉 To celebrate @mathsappeal co-hosts @Bobby_Seagull & @DoTheMathsThing set the @BBCr4today #
![BBC Radio 4 Brain of Britain Ultimate Quiz Book (Collins Puzzle Books), Collins Puzzle Books eBook by Russell Davies | 9780008253318 | Booktopia BBC Radio 4 Brain of Britain Ultimate Quiz Book (Collins Puzzle Books), Collins Puzzle Books eBook by Russell Davies | 9780008253318 | Booktopia](https://www.booktopia.com.au/covers/600/9780008253318/0000/bbc-radio-4-brain-of-britain-ultimate-quiz-book-collins-puzzle-books-.jpg)
BBC Radio 4 Brain of Britain Ultimate Quiz Book (Collins Puzzle Books), Collins Puzzle Books eBook by Russell Davies | 9780008253318 | Booktopia
![John Humphrys - age, partner, children and career - all you need to know about the retiring Radio 4 Today host | The Sun John Humphrys - age, partner, children and career - all you need to know about the retiring Radio 4 Today host | The Sun](https://www.thesun.co.uk/wp-content/uploads/2019/09/image-36d8f8c1ec-1.jpg?w=620)