discrete structure

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To introduce the student to the mathematical tools of logic and induction, and to the basic definitions and theorems concerning relations, functions, and sets.
     PERMUTATION
There are basically two types of permutation:
 Repetition is Allowed: such as the permutation
lock (in picture). It could be "333".
 No Repetition: for example the first three people
in a running race. You can't be first and second.
               COMBINATION
There are also two types of combinations
(remember the order does not matter now):
• Repetition is Allowed: such as coins in your
pocket (5,5,5,10,10)
• No Repetition: such as combination of
subjects to enroll (Maths., English, Music)