Permutations and Combinations

In mathematics, the notion of permutation relates to the act of permuting (rearranging) objects or values.

Question 1: How many ways can you re-arrange the following bunch of numbers? (1,2,3)?

Process 1:

1. (1,2,3)
2. (1,3,2),
3. (2,1,3),
4. (2,3,1),
5. (3,1,2), and
6. (3,2,1).

Answer1: 6 ways.

This is where the concept of factorials comes in: (Continue adapting information found at w:permutation here)

See Also

• Wikipedia: Permutation
• MathsIsFun: Combinations and Permutations.
• Binomial coefficients