Part 3 - Important Practice Questions

Duration: 8 min

This video lesson is available to enrolled students.

Return to /learn/DSSSB-TGT-COMPUTER-SCIENCE-COMPLETE-COURSE/general-intelligence-reasoning-ability/data-sufficiency/algebra-and-exponent-based-data-sufficiency/asset-part-3-important-practice-questions after enrolling

Inside: a video lesson and guided study material.

Module outline

  1. About Course: About the Course
  2. Section A: General Awareness: Polity, Physics, Biology, Chemistry, Static General Knowledge, History, Geography, Indian Economy, GK- Current Affairs, Evolution of Indian Banking (Banking & Financial Awareness), Environment
  3. Section A: General Intelligence & Reasoning ability: Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Data Sufficiency, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Analytical Reasoning (Counting Figures Reasoning), Blood Relations, Syllogisms, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Seating Arrangements, Directions (Direction Test), Puzzle Solving (Puzzles), Calendar, Clock, Cubes & Dices, Selection Decision Table (Decision Making), Logical Sequence Of Words, Crypt Arithmetic, Venn Diagram, Data Arrangement, Inequality, Analogy, Ranking, Order and Sequence, TCS NQT Advanced Reasoning Ability
  4. Section A: Arithmetical & Numerical Ability: 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, Percentage, Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Mensuration and Geometry, Powers and Exponents (Surds and Indices), Algebra, Probability, Mental Ability, Age Problems, Partnership, Statistics, Arithmetic, Speed Mathematics and Basic Mathematics, Miscellaneous
  5. Section A: English Language & Comprehension: Vocabulary, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Articles, Sentence Construction, Preposition, Direct and Indirect Speech, Sentence Completion (Fill in the blanks), Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Modals, Active Passive Voice (Voice), Sentence Correction (Error Correction), Adverb, Conjunction, Cloze Test (Cloze Passage)
  6. Section A: Hindi Language & Comprehension: भाषा, लिपि, ध्वनि, वर्ण, अक्षर, स्वर, व्यंजन, मात्रा और संयुक्ताक्षर, वर्तनी, वर्ण-विन्यास, अनुस्वार, अनुनासिक, चंद्रबिंदु और ‘र’ के रूप, शब्द, पद और शब्द-भेद, संज्ञा और सर्वनाम, विशेषण और क्रिया, लिंग, वचन, पुरुष और कारक, काल, वाच्य, वाक्य और वाक्य-भेद, संधि, समास, विलोम शब्द, पर्यायवाची शब्द, सामान्य अशुद्धियाँ, अनेक शब्दों के लिए एक शब्द, मुहावरे और लोकोक्तियाँ, अपठित गद्यांश और अपठित पद्यांश, Multi-Topic Content (Cross-Concept Material), वर्णमाला
  7. Section B: Programming, Data Structures, OOP & Java: 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, Java, OOPS with C++, Language Design, Intro to Compilers, Visual Basics, Syntax Analysis: Bottom-Up, Object Oriented Technology
  8. Section B: Computer Networks, TCP/IP & Network Security: Introduction to CN, Data Communication, DLL: Flow Control, DLL: Access Control, DLL: Error Control, Data Link Layer - Ethernet, Net Layer: IPv4 & Proto, Net Layer: IP Addressing, Transport Layer Services, TL: Congestion & UDP, Application Layer, Hardware basics, Network Access Technologies, Network Security, Society, Law & Ethics, Mobile Computing, Net Layer:Routing Protocol, Cyber Safety and Security
  9. Section B: Teaching Methodology: Child Development, Concept of Pedagogy, Theories, Inclusive Education, Experiential Pedagogy, Assessment & Evaluation, Curriculum Framework & Reforms, National Education Policy (NEP) 2020, Psychology, Teaching-Learning Process, Personality Development, Teaching Methods & Strategies, Learning and Motivation, Learners & Learning Process, Factors Affecting Teaching, Methods of Teaching, Nature, Objectives & Characteristics of Teaching, Teaching-Learning Aids & ICT Integration, Classroom Management & Communication, Evaluation, Assessment & Measurement, Curriculum & School Environment, Inclusive Education & Special Needs, Professional Development & Ethics
  10. Section B: Digital Electronics / Boolean Logic: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation, Analog-Digital Conversion
  11. Section B: Operating Systems & Linux: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, File Management, Disc Scheduling, Unix OS, Linux OS, Distributed Systems, Windows OS
  12. Section B: Data Base Management System: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, Relational Algebra, SQL, File Organization & Indexing, Transaction Management, Concurrency Control, Database Security & Authorization, Database Recovery, Data Warehousing & Mining
  13. Section B: Internet & Web Technologies: Website, Browser & Services, Internet Fundamentals, Web Design & Development, Protocols & Services, Web Publishing & Hosting, Server Side & Security, HTML Basics, CSS, Emerging Technologies, JavaScript-Basics, .Net Programming, Electronic Data Interchange and E-Commerce, XML
  14. Section B: Computer Fundamentals, IT Basics & Architecture: Basics of COA, Cache Memory Organization, Input Output Organisation, Register Transfer and Microoperations, Control Unit Design, Programming the Basic Computer, Terms & Abbreviations, MS Office Applications, Instr Formats & Modes, Floating Point Rep
  15. Section B: Python Language: Introduction to Python, Tokens, Variables, Data Types, I/O, Operators & Expressions, Control Flow & Looping, Collections & Strings, Functions & Modules, File Handling & Data Analysis
  16. Section B: Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management, extras, Fundamentals of Systems and Information Systems
  17. Section B: Design & Analysis of Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Advanced Algorithms
  18. Section B: Mathematics: Linear Algebra, Calculus, Trigonometry, Vectors, Set Theory, Functions, Relations, Propositional and Predicate Logic, Research Process Steps, Graph Theory
  19. Section B: Computer Graphics, Multimedia & Mobile Computing: Basics of Computer Graphics, 2-D Geometrical Transforms and Viewing, 3-D Object Representation, Geometric Transformations and Viewing, Multimedia
  20. Section B: Emerging Trends: Emerging Tech Trends, Knowledge Representation, Natural Language Processing
  21. DSSSB Previous Year Paper:
  22. Business Studies and Management: Business Communication, Business Organization and Management, Financial Accounting, Business Economics, Management Information System (MIS), Knowledge Management & New Economy
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This video is a tutorial on Data Sufficiency, a common question type in competitive exams like the GMAT or GRE. The instructor, Yash Jain, begins by introducing the topic and then presents a specific problem: 'Is x > 0?'. The problem is structured with two statements: Statement 1: x^3 < x, and Statement 2: x is even. The core of the video is a step-by-step analysis of each statement to determine if it is sufficient to answer the question. The instructor first analyzes Statement 1 by solving the inequality x^3 < x, which he rewrites as x^3 - x < 0. He factors this to x(x-1)(x+1) < 0 and uses a number line to find the solution set, which is x ∈ (-∞, -1) ∪ (0, 1). He then evaluates this against the question, noting that x could be negative (e.g., x = -2) or positive (e.g., x = 0.5), so Statement 1 alone is not sufficient. Next, he analyzes Statement 2, which states that x is even. He provides examples of even integers, both positive (2, 4) and negative (-2, -4), and concludes that this statement alone is also not sufficient. Finally, he considers both statements together, but the video ends before he reaches a final conclusion, leaving the analysis incomplete. The video uses a digital whiteboard for all calculations and explanations.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title slide for 'DATA SUFFICIENCY' featuring a futuristic cityscape. It then transitions to a second title slide with the same topic, introducing the instructor, Yash Jain, who is identified as a 'Knowledge Gate Educator'. The slide also shows a person holding a tablet displaying a bar chart, and a small video feed of the instructor in the bottom right corner. The instructor begins by introducing the topic of Data Sufficiency, which is a common question type in competitive exams. The visual elements establish the educational context and the instructor's identity.

  2. 2:00 – 5:00 02:00-05:00

    The video displays a specific Data Sufficiency problem on a digital whiteboard. The question is 'Que: Is 'x' > 0?'. The two statements are listed: 'Statement 1: x^3 < x' and 'Statement 2: x is even'. The instructor begins his analysis by focusing on Statement 1. He writes the inequality 'x^3 < x' and rewrites it as 'x^3 - x < 0'. He then factors the expression to 'x(x-1)(x+1) < 0'. He explains that to solve this inequality, one must find the critical points where the expression equals zero, which are x = -1, 0, and 1. He then begins to use a number line to test the intervals created by these points, starting with the interval x < -1.

  3. 5:00 – 8:07 05:00-08:07

    The instructor continues his analysis of Statement 1. He tests values in the interval (-∞, -1), such as x = -2, and finds that (-2)^3 < -2 (-8 < -2) is true, so this interval is part of the solution. He then tests the interval (-1, 0), using x = -0.5, and finds that (-0.5)^3 < -0.5 (-0.125 < -0.5) is false, so this interval is not part of the solution. He proceeds to test the interval (0, 1), using x = 0.5, and finds that (0.5)^3 < 0.5 (0.125 < 0.5) is true, so this interval is part of the solution. He concludes that the solution to Statement 1 is x ∈ (-∞, -1) ∪ (0, 1). He then evaluates this against the question 'Is x > 0?'. He notes that x could be -2 (which is not > 0) or 0.5 (which is > 0), so Statement 1 alone is not sufficient. He then moves to Statement 2, 'x is even', and provides examples of even integers, both positive and negative, to show that it is also not sufficient. The video ends as he begins to consider the combination of both statements.

The video provides a clear, step-by-step demonstration of how to approach a Data Sufficiency problem. It begins by establishing the format of the question and then methodically analyzes each statement. The core of the analysis for Statement 1 involves solving a cubic inequality by factoring and using a number line to determine the solution set. The instructor's methodical approach of testing values in different intervals is a key teaching point. The video effectively illustrates the process of determining if a statement is sufficient by showing that it can lead to both a 'Yes' and a 'No' answer to the question. The incomplete analysis of the combined statements suggests that the video is a segment of a longer lecture, but it successfully teaches the foundational skills for solving such problems.

Loading lesson…