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Can you solve the locker riddle? - Lisa Winer

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8,427 Questions Answered

TEDEd Animation

Let’s Begin…

Your rich, eccentric uncle just passed away, and you and your 99 nasty relatives have been invited to the reading of his will. He wanted to leave all of his money to you, but he knew that if he did, your relatives would pester you forever. Can you solve the riddle he left for you and get the inheritance? Lisa Winer shows how.

Solve a smaller problem. Draw out a diagram for 20 lockers. How many lockers remain open?

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 Lisa Winer
  • Director Outis
  • Narrator Addison Anderson

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