Decision Making - Concepts, Short Tricks & Questions

Duration: 18 min

This video lesson is available to enrolled students.

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Inside: a video lesson and guided study material.

Module outline

  1. About the Course: About the Course
  2. Paper-1 & 2 | Basic Numeracy: Ratio and Proportion (Ratios), Divisibility Rules, Mixture and Alligation, Permutation and Combination, Logarithm, Number System, HCF LCM, Sequence and Series (Series), Speed Time and Distance, Percentage, Average, Mensuration and Geometry, Age Problems, Arithmetic, Statistics, Probability, Profit and Loss, Simple Interest and Compound Interest, Partnership, Speed Mathematics and Basic Mathematics, Algebra, Powers and Exponents (Surds and Indices), Time and Work, Pipe and Cistern, RSSB Specific Videos - Basic Numeracy
  3. Paper-1 & 2 | Data Interpretation: Data Interpretation
  4. Paper-1 & 2 | General Mental Ability: Mental Ability, RSSB Specific Videos - Mental Ability
  5. Paper-1 & 2 | Logical Reasoning and Analytical Ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Syllogisms, Seating Arrangements, Blood Relations, Directions (Direction Test), Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Venn Diagram, Analogy, Ranking, Order and Sequence, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Data Arrangement, Logical Sequence Of Words, Crypt Arithmetic
  6. Paper-1 & 2 | Decision Making and Problem Solving: Selection Decision Table (Decision Making)
  7. Paper-1 | General Science: Physics, Biology, Chemistry, RSSB Specific Videos
  8. Paper-1 | General Awareness: State Wise GK, GK- Current Affairs
  9. Paper-2 | Fundamentals of Computer: Basics of COA, Number System, Floating Point Rep, Number Representation
  10. Paper - 2 | Digital Logic Systems: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits
  11. Paper-2 | Operating Systems: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Linux OS, Distributed Systems
  12. Paper-2 | Database Management System: 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
  13. Paper-2 | Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  14. Paper-2 | C Programming: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  15. Paper 2 | Oops, C++, Java: Language Design, OOPS with C++, Java, .Net Programming, Java Fundamentals
  16. Paper 2 | Python: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  17. Paper 2 | Emerging Trends and AI: Emerging Tech Trends, Artificial Intelligence
  18. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Advanced Algorithms
  19. Paper 2 | Data Communication and Network Security: Introduction to CN, Data Communication, DLL: Access Control, DLL: Flow Control, DLL: Error Control, 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, Network Security, Ethical Hacking
  20. Paper-2 I Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  21. Paper-2 | Computer Organization and Architecture: Cache Memory Organization, Input Output Organisation, Instr Formats & Modes, Control Unit Design, Register Transfer and Microoperations
  22. Paper-2 | Web Development: JavaScript-Basics, HTML Basics, CSS, XML
  23. Pedagogy: Child Development, Concept of Pedagogy, Psychology, Theories, Inclusive Education, Experiential Pedagogy, Curriculum Framework & Reforms, National Education Policy (NEP) 2020
  24. Live Sessions: RSSB Live Sessions
  25. RSSB Paper 1 - Full Mock Tests:
  26. RSSB Paper 2 - Full Mock Tests:
  27. SCI Previous Year Papers:
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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