Demo: Types of Series, Question Types, Pre-requisites

Duration: 14 min

This video lesson is available to enrolled students.

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Module outline

  1. Discrete Mathematics: Set Theory, Relations, Functions, Graph Theory, Group Theory, Propositional and Predicate Logic
  2. DataBase Management System/DBMS: 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
  3. Digital Electronics: Digital Systems & Boolean Basics, Logic Gates & Hardware, Boolean Expression, Boolean Minimization, Combinational Circuit, Sequential Circuits, Number System, Number Representation
  4. Computer Architecture: Floating Point Rep, Cache Memory Organization, Input Output Organisation, Pipelining, Instr Formats & Modes, Control Unit Design
  5. Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Threads & Process Creation, Deadlock, Memory Management, Virtual Memory, Disc Scheduling, File Management
  6. C Language: C Fundamentals, Control Flow, Functions, Arrays & Pointers, Storage Classes, Structures & Enums, DMA, Macros, Scoping & File Handling
  7. Data Structures: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  8. Algorithms: Algorithm Analysis, Time Complexity Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos
  9. Computer Networks: Introduction to CN, 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
  10. Theory Of Computation/Automata Theory: Introduction to TOC, Deterministic FA (DFA), Non-Deterministic FA, Regular Expressions, Grammar, Regular Language Properties, Moore & Mealy Machines, Pushdown Automata & CFG, Turing Machines, Complexity Theory
  11. 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
  12. Engineering Mathematics: Permutation and Combination, Linear Algebra, Calculus, Probability, Statistics
  13. General Aptitude: Ratio and Proportion (Ratios), Divisibility Rules, Data Interpretation, 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, Mensuration and Geometry, Mental Ability, Arithmetic, Profit and Loss, Powers and Exponents (Surds and Indices), Average, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Syllogisms, Venn Diagram, Seating Arrangements, Blood Relations, Directions (Direction Test), Analogy, Algebra, Time and Work, Analytical Reasoning (Counting Figures Reasoning), Puzzle Solving (Puzzles), Cubes & Dices, Ranking, Order and Sequence, Mixture and Alligation, Age Problems, Clock, Selection Decision Table (Decision Making), Data Arrangement
  14. English (Verbal Aptitude): Vocabulary, Noun, Subject Verb Agreement (Verb Noun Agreement), Adjectives, Tenses, Pronoun, Preposition, Direct and Indirect Speech, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Completion (Fill in the blanks), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Sentence Correction (Error Correction), Verbal Analogy (Word Based Analogy), Conjunction, Interjection, Verb, Articles, Adverb, Modals, Sentence Construction
  15. Live Classes Recordings(Earlier Batch): GATE 2026 Live Class
  16. Full Mock Test:
  17. Previous Year Papers:
  18. GATE 2026 Counselling: Counselling and Guidance Sessions
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video introduces the concept of Number and Letter Series, emphasizing their role in competitive exams like CAT, XAT, and government services. The instructor categorizes series into four main types: Number, Alpha-numeric, Alphabet, and Letter. The lesson progresses through specific problem-solving techniques for each category, including identifying wrong terms in letter sequences and recognizing repeating patterns in symbol series. A significant portion is dedicated to outlining essential mathematical pre-requisites, such as memorizing squares up to 50, cubes up to 20, multiplication tables, and prime numbers, which are foundational for solving these problems efficiently.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a visual introduction to Number and Letter Series, displaying geometric shapes forming alphabet letters. The instructor presents an immediate challenge: a number puzzle sequence 5, 7, 12, 19, 31, 50. The slide explicitly asks viewers to 'Find the Next Number in this series'. This segment establishes the topic's visual nature and sets an engaging tone by presenting a concrete problem before theoretical explanation. The on-screen text identifies the instructor as 'YASH JAIN SIR' and labels the section 'NUMBER SERIES - LETTER SERIES'. The instructor gestures while explaining, indicating an interactive teaching style focused on immediate problem engagement.

  2. 2:00 – 5:00 02:00-05:00

    The instructor transitions to the rationale for studying this topic, using a slide titled 'Why Study This Topic?' featuring an image of a confused child. A comprehensive list of competitive exams appears, including CAT, XAT, CMAT, SNAP, NMAT, MAT, and IIFT. Red checkmarks sequentially appear next to each exam name as the instructor explains their relevance. The slide emphasizes that this topic serves as a tool to check mental levels and improve logic building ability without relying on specific formulas or tricks. The text also expands to include Placements, Government Exams, Civil Services, Banking, and Railway Exams. This section establishes the broad applicability of series problems across various high-stakes testing environments.

  3. 5:00 – 10:00 05:00-10:00

    The lesson moves into the classification of series problems using a flowchart that divides them into Number, Alphabet, Alpha-numeric, and Letter types. Specific examples are highlighted for each: '4, 7, 12, 19' for Number series and 'A, E, F, J' for Alphabet series. The instructor writes a specific number sequence problem '4 7 13 19' on the screen to demonstrate pattern analysis. The segment then shifts focus to Letter Series, presenting a problem: 'AV, CU, DT, GS, IR, KQ'. The instructor guides the viewer to identify the wrong term in this sequence. Through step-by-step analysis of letter positions and differences, 'DT' is identified as the incorrect term. The slide lists multiple-choice options A: AV, B: CU, C: IR, D: DT.

  4. 10:00 – 14:19 10:00-14:19

    The final segment addresses Symbol Series and essential mathematical pre-requisites. A symbol series question asks 'What comes next?' in a pattern of shapes with inner squares. The instructor demonstrates identifying a repeating cycle of four distinct shapes: square, diamond, oval, and circle. By numbering the cycle 1 to 4, the next term is determined as the second item in the sequence. The video concludes with a 'Pre-requisites' slide listing critical knowledge: Squares of 1 to 50 (or 100), Cubes of 1 to 20 (or 40), Tables of 1 to 30 (or 50), and Prime numbers from 1 to 200 (or 500). A detailed grid of squares from 1 to 50 is shown as a reference tool. The video ends with a 'THANKS FOR WATCHING' screen, summarizing the foundational skills needed for series problem-solving.

The video provides a structured introduction to series problems, moving from engagement through classification to specific problem-solving and foundational requirements. The teaching flow begins with a direct puzzle to capture interest, followed by an explanation of the topic's utility in competitive exams like CAT and government services. The core instructional content classifies series into four distinct types: Number, Alphabet, Alpha-numeric, and Letter. Each type is illustrated with concrete examples, such as the sequence '4, 7, 12, 19' for numbers and 'AV, CU, DT...' for letters. The instructor demonstrates analytical methods, such as identifying wrong terms in letter sequences and recognizing repeating cycles in symbol series. A critical component of the lesson is the emphasis on mathematical pre-requisites, specifically memorizing squares up to 50, cubes up to 20, multiplication tables, and prime numbers. This highlights that success in series problems relies heavily on quick mental calculation and pattern recognition rather than complex formulas. The progression from general concepts to specific examples and finally to required foundational knowledge creates a comprehensive overview for students preparing for competitive exams.

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