Short Tricks to Remember Ratio to Percentage Table Part 4

Duration: 8 min

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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 provides a comprehensive guide to converting ratios into percentages, with a strong emphasis on memorization techniques for competitive exams. The instructor, Yash Jain, begins by presenting a detailed table of common ratios and their corresponding percentage values. The lesson progresses from basic fractions like 1/2 and 1/4 to more complex ones like 1/7 and 1/11. A significant portion of the video is dedicated to a specific trick for calculating multiples of 1/7, utilizing a multiplication method to recall the repeating decimal sequence 142857. The visual aids include chalkboard-style graphics, data tables, and handwritten calculations on a digital whiteboard to reinforce the concepts.

Chapters

  1. 0:00 – 2:00 00:00-02:00

    The video opens with a title card reading 'PERCENTAGE' followed by an introduction slide 'PERCENTAGES - By YASH JAIN'. The instructor introduces the topic and displays a 'RATIO TO PERCENTAGE TABLE'. This table lists fundamental ratios such as 1/1, 1/2, 1/3, 1/4, 1/5, 1/8, 1/16, and 1/32 alongside their percentage equivalents like 100%, 50%, 33.33%, 25%, 20%, 12.5%, 6.25%, and 3.125%. The instructor likely reviews these standard conversions to establish a baseline for the lesson.

  2. 2:00 – 5:00 02:00-05:00

    The 'RATIO TO PERCENTAGE TABLE' expands to include more complex fractions. The instructor displays values for 1/6 (16.67%), 1/7 (14.2857%), 1/8 (12.50%), 1/9 (11.11%), 1/10 (10%), 1/11 (9.09%), and 1/12 (8.33%). The table continues with ratios like 1/17 (5.88%), 1/18 (5.55%), 1/19 (5.22%), 1/20 (5.00%), and extends to 1/25 through 1/37. The instructor emphasizes memorizing these specific percentage values, such as 1/7 being approximately 14.2857%, to facilitate quick mental math during problem-solving.

  3. 5:00 – 8:14 05:00-08:14

    The lesson focuses specifically on the fraction 1/7 and its multiples. The table shows 1/7 (14.2857%), 2/7 (28.5714%), 3/7 (42.8571%), 4/7 (57.1428%), 5/7 (71.4285%), 6/7 (85.7142%), and 7/7 (100%). The instructor writes multiplication equations on the screen, such as '14 x 1 = 14', '14 x 2 = 28', and '14 x 3 = 42', to demonstrate a trick for finding the first two digits of the percentage. He explains the cyclic pattern of the digits 142857 and categorizes numerators as even or odd to help students remember the sequence. He also notes that knowing tables up to 25 is a prerequisite for this method.

The video systematically builds a student's ability to convert ratios to percentages by first establishing a foundation of common fractions and then introducing advanced memorization tricks. The progression moves from a general reference table covering ratios from 1/1 to 1/37 to a deep dive into the specific properties of the fraction 1/7. By breaking down the repeating decimal 142857 and linking it to simple multiplication tables, the instructor provides a practical tool for rapid calculation. This structured approach ensures that learners not only memorize values but also understand the underlying patterns, making the content highly effective for exam preparation.

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