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Lesson 6 of 20 · about 14 min

Permutations and combinations

Does order matter? A race podium cares who came first; a team doesn't. You'll count arrangements (permutations) and selections (combinations), learn the "n choose k" formula and why it divides, and work out real lottery and card odds.

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This lesson is part of the DoingCamp Pass. Members get every lesson in every course, with all the interactive visuals, coding exercises and challenges.

In this lesson you'll learn:

  • Factorial and permutations
  • Combinations ("n choose k")

Free to try in F06 Discrete Math:

The first 3 lessons of every course are free, no account needed.