Can You Solve this Math Riddle of Ted-Ed - Video Goes Viral

Get the Janitor, Lab Assistant and the Professor cross the bridge before the zombies eat you all

Can you use math to solve the riddle and save yourself from rabid zombies?
Watch the video below.

Taking that internship in a remote mountain lab might not have been the best idea. Pulling that lever with the skull symbol just to see what it did probably wasn’t so smart either. But now is not the time for regrets because you need to get away from these mutant zombies...fast. Can you use math to get you and your friends over the bridge before the zombies arrive?

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