Important Practice Questions (Part 3)

Duration: 11 min

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Inside: a video lesson and guided study material.

Module outline

  1. Quantitative Ability: Percentage, Profit and Loss, Ratio and Proportion (Ratios), Average, Time and Work, Speed Time and Distance, Simple Interest and Compound Interest, Age Problems, Number System, Divisibility Rules, HCF LCM, Algebra, Permutation and Combination, Probability, Data Interpretation, Logarithm, Sequence and Series (Series), Powers and Exponents (Surds and Indices), Speed Mathematics and Basic Mathematics
  2. Logical Reasoning: Seating Arrangements, Puzzle Solving (Puzzles), Data Arrangement, Coding Decoding, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Data Sufficiency, Venn Diagram, Inequality, Series (Number and Letter Series) (Numerical Relations and Reasoning), Logical Sequence Of Words, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Analogy, Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning)
  3. Verbal Ability: Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Subject Verb Agreement (Verb Noun Agreement), Tenses, Articles, Preposition, Conjunction, Modals, Active Passive Voice (Voice), Direct and Indirect Speech, Vocabulary, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Sentence Completion (Fill in the blanks), Sentence Correction (Error Correction), Cloze Test (Cloze Passage), Facts, Inference and Judgements
  4. Programming Fundamentals (Technical): C Fundamentals
  5. Data Structures (Technical): Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  6. Algorithms (Technical): Algorithm Analysis, Sorting Algorithms, Greedy Algorithms, Dynamic Programming, Minimum Spanning Trees, Shortest Path Algos, Time Complexity Analysis, Advanced Algorithms
  7. OOPs (Technical): Object Oriented Programming (OOPS)
  8. DBMS (Technical): Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), Decomposition Properties & 4NF, File Organization & Indexing, Relational Algebra, Relational Calculus, Transaction Management, Concurrency Control, Database Recovery, ORDBMS, Database Security & Authorization, Query Processing & Optimization, Enhanced Data Models, Data Warehousing & Mining, Big Data Systems, NoSQL
  9. SQL (Technical): SQL
  10. Operating Systems (Technical): Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, Disc Scheduling, File Management, Windows OS, Linux OS, Security, Distributed Systems, Virtual Machines
  11. Computer Networks (Technical): 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 Security, Mobile Technology, Cloud Computing and IoT, Cyber and Info Security
  12. Software Engineering (Technical): Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  13. Coding/Automata Round: Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir, Pseudo Codes
  14. Personality / Behavioral Assessment: Behavioral Assessment (Behavioral Competency Profiling) (Psychometric Test)
  15. Writing Assessment: English Writing Ability
AI summary & chapters

AI Summary

An AI-generated summary of this video lecture.

This educational video is a comprehensive tutorial on solving number and letter series problems, a common topic in competitive exams. The instructor, Yash Jain, begins by introducing the topic with a title card and then presents a series of practice questions. The first problem is a number series: 5, 7, 19, 31, 50, ?, which the instructor analyzes by calculating the differences between consecutive terms (2, 12, 12, 19) and identifying a pattern of increasing differences. The second problem is a 'pick the odd one out' question involving letter series: CADBE, JHKIL, XXYWZ, ONPMQ. The instructor explains the logic by analyzing the pattern of letter positions, identifying that the first three groups follow a 'letter-number-letter-number' pattern, while the last one does not. The third problem is a letter series: AD, CG, FK, JP, ___. The instructor breaks this down by analyzing the first and second letters of each pair separately, finding that the first letters (A, C, F, J) follow a pattern of adding 2, 3, 4, and the second letters (D, G, K, P) follow a pattern of adding 3, 4, 5, leading to the next term being OV. The final problem is another 'odd one out' question: BJO, YKL, VLI, SMF, ? with options A) QNB, B) PNB, C) RNC, D) PNC. The instructor analyzes the sum of the positions of the letters in each group, finding that the first three groups sum to 28, while the fourth sums to 26, and the correct answer must also sum to 28, which is option C) RNC. The video concludes with a 'Thanks for Watching' screen.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card for 'NUMBER SERIES & LETTER SERIES'. The instructor, Yash Jain, introduces the topic. The first problem presented is a number series: 'Find the next number in this series: 5, 7, 19, 31, 50, ?'. The instructor begins to analyze the pattern by calculating the differences between consecutive terms, writing down the differences as 2, 12, 12, 19 on the screen.

  2. 2:00 – 5:00 02:00-05:00

    The video transitions to a new problem: 'Pick the odd one out' with the options CADBE, JHKIL, XXYWZ, ONPMQ. The instructor explains the logic by analyzing the pattern of the letters. He identifies that the first three groups follow a 'letter-number-letter-number' pattern (e.g., C-A-D-B-E), while the last group, ONPMQ, does not follow this pattern, making it the odd one out. He also writes 'Kids -> letter series' and 'Men -> number' on the screen to illustrate the concept.

  3. 5:00 – 10:00 05:00-10:00

    The next problem is a letter series: AD, CG, FK, JP, ___. The instructor analyzes the pattern by breaking it into two parts. For the first letters (A, C, F, J), he calculates the differences: +2, +3, +4, indicating the next first letter should be J+5=O. For the second letters (D, G, K, P), he calculates the differences: +3, +4, +5, indicating the next second letter should be P+6=V. Therefore, the next term is OV. The instructor then presents the final problem: BJO, YKL, VLI, SMF, ? with options A) QNB, B) PNB, C) RNC, D) PNC. He analyzes the sum of the positions of the letters in each group: B(2)+J(10)+O(15)=27, Y(25)+K(11)+L(12)=48, V(22)+L(12)+I(9)=43, S(19)+M(13)+F(6)=38. He then realizes the pattern is the sum of the positions, and the first three groups sum to 28, while the fourth sums to 26. He calculates the sum for the options and finds that RNC (18+14+3=35) is incorrect. He then re-evaluates and finds that the correct pattern is the sum of the positions, and the correct answer is C) RNC, which sums to 28.

  4. 10:00 – 11:08 10:00-11:08

    The video concludes with a 'Thanks for Watching' screen. The instructor has solved all the problems, and the final answer for the last question is confirmed to be C) RNC. The video ends with a thank you message to the viewers.

The video provides a structured and methodical approach to solving number and letter series problems. It begins with a simple number series, demonstrating the technique of analyzing differences between terms. It then progresses to more complex letter series, teaching the student to break down the problem into its constituent parts (e.g., first letter, second letter) and identify the underlying pattern. The 'odd one out' questions are used to reinforce the concept of identifying a consistent rule and finding the one that deviates. The instructor's step-by-step analysis, supported by on-screen annotations, makes the problem-solving process clear and accessible for students preparing for competitive exams.

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