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| Lecture 21 - Order Relations | Lecture 22 - Order and Relations and Equivalence Relations | Lecture 23 - Equivalence relations and partitions |
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| Lecture 24 - Functions | Lecture 25 - Functions (Contd.) | Lectures 26 - Functions (Contd.) |
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| Lecture-27-Permutations and Combinations | Lecture 28 - Permutations and combinations | Lecture 29 - Permutations and Combinations(Contd...) |
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| Lecture 30 - Generating Functions | Lecture 31- Generating Functions | Lecture 32 - Recurrence Relations |
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| Lecture 33 - Recurrence Relations | Lecture 34-Recurrence Relations(contd..) | Lecture 35-Algebras |
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| Lecture 36-Algebras(contd...) | Lecture 37-Algebras(contd...) | Lecture 38-Finite State Automaton |
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| Lecture 39-Finite State Automaton(contd....) | Lecture 40-Lattices |
