Specialist

Specialist

1. Combinatorics

   • Restrictions
     • To Include or Exclude specific Objects
       • Reduces the number of items to select or to select from
         • EXAMPLE: A Netball Team: 7 from 12 Players Selected
           • a) No restrictions
           • b) a certain player must be included
           • 2 players, must be different teams
     • To include a specific Object
       • Reduces the number of items to select and to select from
         • EXAMPLE
   • Counting Events/Number of ways something occurs
   • Multiplication Principle
     • Combination events - "and" - occur together
     • If there are m ways to do A, and n ways to do B
       • There are mxn ways to do A and B
   • Addition Principle
     • Distint Events - "or" - both happen seperately

2. Factorial Notation & Permuations

   • Factorial Notation
     • n!= n(n-1)(n-2)...
       • n factorial
   • Permutations
     • Solved by: Tree Diagrams, Factorial Notation, Box Method
     • ORDER IS SPECIFIC
     • Like Objects can be counted once
       • So can some restrictions

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