1_Permutation and Combination

1_Permutation and Combination

1. Permutation

   • Permutation of 'n' objects taken 'r' at a time
   • Theorems
   • Permutation of 'n' objects of which 'p' objects are alike of one kind,'q' objects are alike of a second kind,'r' objects are alike of the third kind and so on

2. Combination

   • Selection of 'n' objects taken 'r' at a time
   • Properties

3. Fundamental theorem of counting

4. Factorial notation

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