![Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter](https://pbs.twimg.com/media/C6kQwsBVwAAk2hL.jpg)
Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter
![Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter](https://pbs.twimg.com/media/C6kQv6YVwAAkg0p.jpg)
Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter
![Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter](https://pbs.twimg.com/media/C6kQvPeV4AAzyrG.jpg)
Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter
![Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter Sarah Carter on Twitter: "@MrsMathematics Original Puzzle was found here: https://t.co/s2mQSbgN3y The puzzle is by Stephen Froggatt." / Twitter](https://pbs.twimg.com/media/C6kQuXOVAAI2loY.jpg)