Added content for DM, i.e. notes for all units, question papers (2015 and 2019 pattern), README file and DISCLAIMER

DISCLAIMER.md

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+# DISCLAIMER
+
+Disclaimer for [DiscreteMathematics](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics) repository under [sppu-se-comp-content](https://git.kska.io/sppu-se-comp-content) organization.
+
+---
+
+- Please be advised that this repository [DiscreteMathematics](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics), its organization ([sppu-se-comp-content](https://git.kska.io/sppu-se-comp-content)), and all of its content are entirely independent and not associated to, and/or affiliated with SPPU (Savitrbai Phule Pune University, Pune) and/or any of its colleges, nor with [KSKA Git](https://git.kska.io). The materials provided within, including notes from our professors and question papers from SPPU, are solely for educational purposes and convenience.
+
+- KSKA Git serves merely as a platform for this content and does not imply any association and/or endorsement from SPPU or KSKA Git. It is important to recognize that the organization (sppu-se-comp-content) and all of its repositories in KSKA Git operates independently, and any references to educational institutions or platforms are purely for informational clarity.
+
+- Furthermore, it is emphasized that the content available within this repository remains meticulously curated to align with the latest 2019 SPPU syllabus for computer engineering. Our commitment to accuracy ensures that the materials provided reflect the current academic standards prescribed by SPPU, offering students a reliable resource to supplement their studies.
+
+---

README.md

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+# Discrete Mathematics (DM)
+
+
+This repository offers notes and question papers (2015 and 2019 pattern) for discrete mathematics (DM) tailored to the second year of computer engineering (SEM-3) at SPPU.
+
+---
+
+## Index
+
+### Notes
+
+1. [Unit 1 - Set Theory and Logic](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Notes/Unit%201%20-%20Set%20Theory%20and%20Logic)
+2. [Unit 2 - Relation and Function](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Notes/Unit%202%20-%20Relation%20and%20Function)
+3. [Unit 3 - Counting](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Notes/Unit%203%20-%20Counting)
+4. [Unit 4 - Graph Theory](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Notes/Unit%204%20-%20Graph%20Theory)
+5. [Unit 5 - Trees](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Notes/Unit%205%20-%20Trees)
+
+### Question Papers
+
+- [IN-SEM (2019 Pattern)](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/IN-SEM)
+- [END-SEM (2019 Pattern)](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/END-SEM)
+
+**2015 Pattern**
+> **NOTE:** These are question papers based on old pattern (2015), use them for practice/reference only.
+
+- YEAR 2016
+	- [NOV/DEC](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/2015/Nov_Dec_2016.pdf)
+- YEAR 2017
+	- [MAY/JUN](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/2015/May_Jun_2017.pdf)
+	- [NOV/DEC](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/2015/Nov_Dec_2017.pdf)
+- YEAR 2018
+	- [MAY/JUN](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/2015/May_Jun_2018.pdf)
+	- [NOV/DEC](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/2015/Nov_Dec_2018.pdf)
+- YEAR 2019
+	- [NOV/DEC](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/Question%20Papers/2015/May_Jun_2019.pdf)
+
+	---
+
+## Miscellaneous
+
+**-> Disclaimer:** Please read the [DISCLAIMER](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/DISCLAIMER.md) file for important information regarding the contents of this repository.
+
+**-> Note:** All the notes in this repository are provided by our professors, thus to use them for anything other than education purposes, please contact them. All the question papers are from SPPU.
+
+**-> Maintained by:**
+- [TanmaySpamzzz](https://git.kska.io/TanmaySpamzzz)
+- [notkshitij](https://git.kska.io/notkshitij)
+
+**->** Repository icon from [Icons8](https://icons8.com).
+
+**-> Keywords:**
+
+SPPU, Savitribai Phule Pune University, Pune University, Computer Engineering, COMP, Second Year, SE, Semester 3, SEM-3, Syllabus, Discrete Mathematics, DM, set theory, relation and function, counting, graph theory, trees, notes, question papers, 2019 pattern, 2015 pattern
+
+Previous main branch has been pruned. [Click here to view old commits](https://git.kska.io/sppu-se-comp-content/DiscreteMathematics/src/branch/main/git-commit-logs.txt).
+
+---