Can You Solve This Riddle?

Try 23andMe at
SUBSCRIBE to BrainCraft!

BrainCraft was created by Vanessa Hill (@nessyhill) and is brought to you by PBS Digital Studios. Talking psychology, neuroscience & why we act the way we do.

My Twitter | Instagram

Hosted, Animated and Produced by Vanessa Hill 🍦
Written by Teagan Wall

And thank YOU for watching.

References 🗂

This riddle first appeared in Grossman, Howard (1945). Scripta Mathematica XI

TedED have a similar riddle that’s beautifully animated:



Leave a Reply

Your email address will not be published. Required fields are marked *