Decision Making - Concepts, Short Tricks & Questions

Duration: 18 min

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Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Paper 2 | Digital Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Floating Point Rep
  3. Paper 2 | Computer Organization And Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Control Unit Design, Instr Formats & Modes, Programming the Basic Computer
  4. Paper 2 | Analog And Digital Communication: Introduction to Communication Systems & Random Signals, Analog Communication Systems, Information Theory & Digital Communication Fundamentals, Digital Modulation & Detection Techniques, Error Control, Synchronization & Multiple Access Techniques
  5. Paper 2 | Programming in C: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  6. Paper 2 | Data Structures And Programming: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing, Java, OOPS with C++, Java Fundamentals, Array, String, IO & References
  7. Paper 2 | Algorithms: Algorithm Analysis, Sorting Algorithms, Time Complexity Analysis, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  8. Paper 2 | Compiler Design: Intro to Compilers, Lexical Analysis, Grammar & CFG, Syntax Analysis: Top-Down, Syntax Analysis: Bottom-Up, Semantic Analysis & SDT, Intermediate Code Gen, Code Optimization, Run Time Environment
  9. Paper 2 | Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management, Unix OS, Linux OS
  10. Paper 2 | Databases: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, Relational Calculus, File Organization & Indexing, Transaction Management, Concurrency Control
  11. Paper 2 | Information Systems and Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  12. Paper 2 | Computer Networks: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, DLL: Framing, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Net Layer:Routing Protocol, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware Basics
  13. Paper 2 | Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, Emerging Technologies, HTML Basics, JavaScript-Basics, CSS, XML, HTML5
  14. Paper 2 | Cyber Security And Emerging Technologies: Emerging Tech Trends
  15. Paper 2 | Cloud Technology: Cloud Computing
  16. Paper 2 | Probability and statistics: Probability, Statistics
  17. Paper-1 English: Vocabulary, Preposition, Articles, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Cloze Test (Cloze Passage), Sentence Construction
  18. Paper 1 General Mental Ability & Logical reasoning: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Percentage, Average, Powers and Exponents (Surds and Indices), Algebra, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Mental Ability, Age Problems, Partnership, Arithmetic, Speed Mathematics and Basic Mathematics, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Venn Diagram, Analogy
  19. Paper-1 General Knowledge & Current Affairs: State Wise GK, History, Geography, GK- Current Affairs, Static General Knowledge
  20. Full Length Mock Test:
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video provides a comprehensive lecture on "Decision Making" for competitive exams, specifically focusing on "Passage Based Decision Making" and "Eligibility Test" formats. The instructor, Yash Jain Sir, begins by defining the types of questions students might encounter. He then transitions into a practical demonstration, solving a complex logical reasoning problem involving six individuals (P, Q, R, S, T, U) with varying work hours and earnings. The lecture emphasizes the importance of reading data carefully and using a tabular method to organize variables and apply constraints systematically. The session concludes with the final solution to the problem and a summary of the key deductions made, providing a clear example of how to approach such questions in an exam setting. The video is part of a series by Knowledge Gate, as indicated by the logo.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide displaying "DECISION MAKING" in large white text against a black background, accompanied by a graphic of a person reviewing profiles on a screen. The instructor introduces the topic, setting the context for a lecture on decision-making skills required for exams. He is wearing a blue polo shirt and glasses. The slide also features a teal rectangle at the top. The visual style is clean and professional.

  2. 2:00 – 5:00 02:00-05:00

    A slide titled "Types of Questions" appears, listing "1) Passage Based Decision Making" and "2) Eligibility Test". The instructor explains that Passage Based Decision Making generally involves a paragraph or group of statements followed by questions, where a candidate is required to read the data carefully and decide accordingly. He gestures towards the screen to emphasize the points. The text "YASH JAIN SIR KNOWLEDGE GATE EDUCATOR" is visible at the bottom left. The background is dark green.

  3. 5:00 – 10:00 05:00-10:00

    The instructor presents a specific problem, Q1, displayed on the screen. The problem involves six persons (P, Q, R, S, T, U) working different hours among 3, 4, 5, 6, 8, and 9 hours, and earning different amounts among Rs.200, Rs.300, Rs.450, Rs.500, Rs.650, and Rs.700. He begins writing the problem details on the board and draws a table with columns for Persons, Hours, and Money to organize the data. He writes "Time: 3/4/5/6/8/9" and "Amount: 200/300/450/500/650/700" on the side. The TCS 2020 logo is visible. The problem text is white on a dark background.

  4. 10:00 – 15:00 10:00-15:00

    The instructor starts filling the table based on direct clues. He writes "Q earns Rs. 500 by working 8hrs a day" into the table. He notes the condition "The difference in the number of work hours of P and S is 4", deducing that P and S must be 5 and 9 hours respectively. He also writes "One person works for 6hrs and earns Rs.700" and "U earns Rs. 200 more than T". He further notes "P does not earn Rs.300" and "The one, who works for maximum hours, does not earn the lowest wage". He circles the numbers 3, 4, 5, 6, 8, 9 on the board. He writes "P-S=4" and "S-P=4" on the board. The table is drawn in green chalk.

  5. 15:00 – 18:20 15:00-18:20

    The instructor finalizes the solution. He deduces that R works 6 hours and earns 700. He determines S works 9 hours and earns 300. He leaves T and U with the remaining hours (3 or 4) and earnings (450 or 650). He answers the question "For how many hours does U work?" as "Cannot be determined" and answers "How many persons work for lesser hours than R?" as "Three". The video ends with a "THANKS FOR WATCHING" slide. He shows the final table with P(5hrs, 200), Q(8hrs, 500), R(6hrs, 700), S(9hrs, 300), T(3/4hrs, 450), U(4/3hrs, 650). He points to the table to explain the final arrangement. The final slide has a blue geometric background.

The lecture progresses from a general introduction to decision-making types to a detailed, step-by-step solution of a complex logical reasoning problem. The instructor uses a tabular method to organize variables (persons, hours, earnings) and applies constraints to eliminate possibilities. Key takeaways include the structure of passage-based questions and the technique of using a grid/table to solve multi-variable logic puzzles. The final table shows P(5hrs, 200), Q(8hrs, 500), R(6hrs, 700), S(9hrs, 300), T(3/4hrs, 450), U(4/3hrs, 650). The instructor's methodical approach highlights the importance of cross-referencing conditions to arrive at a definitive solution. The video serves as a practical guide for students preparing for TCS NQT or similar exams.

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