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 | Programming & Data Structures: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling, Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  3. Paper-2 | Databases / DBMS & SQL: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, SQL, Relational Calculus, Transaction Management, Concurrency Control
  4. Paper-2 | Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  5. Paper-2 | Computer Networks & Security: 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, Network Access Technologies, Network Security
  6. 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
  7. 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
  8. Paper-2 | Theory of Computation: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines
  9. Paper-2 | Computer Organization & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design, Programming the Basic Computer
  10. 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
  11. Paper-1 | General Awareness: Polity, Physics, Biology, Chemistry, Static General Knowledge, GK- Current Affairs, History, Geography, Indian Economy, Environment
  12. Paper-1 | Logical Reasoning: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Data Interpretation, Blood Relations, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Clock, Calendar, Cubes & Dices, Directions (Direction Test), Analogy, Seating Arrangements, Analytical Reasoning (Counting Figures Reasoning)
  13. Paper-1 | Quantitative Aptitude: Ratio and Proportion (Ratios), Mixture and Alligation, Permutation and Combination, Number System, HCF LCM, Speed Time and Distance, Average, Age Problems, Percentage, Profit and Loss, Time and Work, Pipe and Cistern, Simple Interest and Compound Interest, Powers and Exponents (Surds and Indices), Mensuration and Geometry, Probability, Statistics, Arithmetic, Algebra
  14. Paper-1 | English: Vocabulary, 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), Sentence Construction, Cloze Test (Cloze Passage)
  15. Coal India Previous Year Paper:
  16. Engineering Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic, Linear Algebra, Calculus
  17. Coal India 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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