Skip to main content

TED-Ed

The coin flip conundrum - Po-Shen Loh

679,564 Views

7,869 Questions Answered

TEDEd Animation

Let’s Begin…

When you flip a coin to make a decision, there's an equal chance of getting heads and tails. What if you flipped two coins repeatedly, so that one option would win as soon as two heads showed up in a row on that coin, and one option would win as soon as heads was immediately followed by tails on the other? Would each option still have an equal chance? Po-Shen Loh describes the counterintuitive math behind this question.

Watch the video and finish the Think section to complete the lesson.


About TED-Ed Animations

TED-Ed Animations feature the words and ideas of educators brought to life by professional animators. Are you an educator or animator interested in creating a TED-Ed Animation? Nominate yourself here »

Meet The Creators

Educator
Po-Shen Loh
Director
Mimi Chiu
Script Editor
Eleanor Nelsen
Producer
Aaron Augenblick
Animator
Mimi Chiu
Collaborator
Andrea Janov , Zach Nelkin, Mark Paulson
Associate Producer
Elizabeth Cox, Jessica Ruby
Content Producer
Gerta Xhelo
Editorial Producer
Alex Rosenthal
Narrator
Addison Anderson
Fact-Checker
Brian Gutierrez

More from Math In Real Life