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What happens if you guess? - Leigh Nataro

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Will it rain tomorrow? How likely is your favorite team to win the Super Bowl? Questions like these are answered through the mathematics of probability. Watch this artistic visualization of your odds of passing a test if you don’t know any of the answers.

The Fundamental Counting Principle can be extended to count the ways to form different combinations of groupings. For example, if there are 4 dessert choices, 3 entrée choices and 2 appetizer choices, the number of dessert-entrée-appetizer combinations is 4x3x2 = 24. A restaurant advertises 120 dessert-entrée-appetizer combinations. If they have 5 entrée options and 3 appetizer options, how many dessert options do they have?

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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 Leigh Nataro
  • Animator Matthew Saunders
  • Narrator Leigh Nataro

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