Permutations

Take Aways:

  1. Find r : the number of events or positions
  2. Find n : the number of items or things being choen from
  3. Draw r positions.
  4. ______ × ______ × ______ × ....
  5. Place n in the first position
  6.       n × ______ × ______ × ....
  7. Decrease the value by one for each one of the positions:
  8.       n × ( n - 1 ) × ( n - 2 ) × ....
  9. Multiply to find the number of permutations.


Useful Equations:

Have any Questions?