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Permutations And Combinations (view source)
Revision as of 10:27, 7 August 2014
, 10:27, 7 August 2014→Learning objectives
===Learning objectives===
===Learning objectives===
*state that permutation is an arrangement and write the meaning of
*state that permutation is an arrangement and write the meaning of
*state that and apply this to solve problems;
*state that <math>{^{n}}P_{r}</math>=<math>\frac{n!}{(n-r)!}</math><br>and apply this to solve problems;
*show that
*show that
#<math>{(n+1)^{n}}P_{n}</math>=<math>{^{n+1}}P_{n}</math><br>
#<math>{^{n}}P_{r+1}</math>=<math>{(n-r)^{n}}P_{r}</math><br>
===Notes for teachers===
===Notes for teachers===