Short Tricks to Remember Ratio to Percentage Table Part 4

Duration: 8 min

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Module outline

  1. Language Skills (English): Vocabulary, Verbal Analogy (Word Based Analogy), Noun, Pronoun, Verb, Adjectives, Adverb, Preposition, Articles, Conjunction, Tenses, Modals, Subject Verb Agreement (Verb Noun Agreement), Determiner, Active Passive Voice (Voice), Direct and Indirect Speech, Sentence Correction (Error Correction), Sentence Completion (Fill in the blanks), Sentence Construction, Sentence Re-arrangements (Para Jumbles) (Narrative Sequencing), Comprehension / Reading Comprehension / Unseen Passages (Critical Reasoning) (Paragraph Questions), Cloze Test (Cloze Passage)
  2. General Aptitude (Quantitative Ability): Percentage, Ratio and Proportion (Ratios), Average, Profit and Loss, Simple Interest and Compound Interest, Time and Work, Pipe and Cistern, Speed Time and Distance, Mixture and Alligation, Age Problems, Partnership, Number System, HCF LCM, Divisibility Rules, Powers and Exponents (Surds and Indices), Algebra, Data Interpretation, Statistics, Sequence and Series (Series), Logarithm, Arithmetic, Speed Mathematics and Basic Mathematics
  3. General Aptitude (Reasoning Ability): Series (Number and Letter Series) (Numerical Relations and Reasoning), Coding Decoding, Syllogisms, Blood Relations, Directions (Direction Test), Ranking, Order and Sequence, Inequality, Logical Sequence Of Words, Seating Arrangements, Puzzle Solving (Puzzles), Non Verbal Reasoning (Spatial Aptitude) (Spatial Reasoning) (Visual Reasoning), Cubes & Dices, Venn Diagram, Deductive and Inductive Reasoning (Logical Deduction and Induction) (Prepositional Reasoning), Selection Decision Table (Decision Making), Analytical Reasoning (Counting Figures Reasoning), Clock, Calendar, Data Sufficiency, Analogy
  4. Technical Skills MCQ - Data Structure: Introduction to DS, Array, Stack, Queue, Linked List, Tree, Graphs, Hashing
  5. Technical Skills MCQ - Networking: 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, Application Layer, Mobile Technology, Network Security
  6. Technical Skills MCQ - Operating System: Introduction to OS, Process Management, CPU Scheduling, Process Synchronization, Deadlock, Threads & Process Creation, Memory Management, Virtual Memory, File Management, Windows OS, Linux OS, Security, Virtual Machines
  7. Technical Skills MCQ - DBMS: Basics of DBMS, ER Diagram, Relational Model & Functional Dependencies, Keys & Integrity Constraints, Normalization (1NF - BCNF), File Organization & Indexing, Relational Algebra, SQL, Transaction Management, Concurrency Control, Database Recovery, Database Security & Authorization, NoSQL
  8. Technical Skills MCQ - Software Engineering: Fundamentals of Software Engineering, Software Requirements and Quality Assurance, Software Design, Estimation and Metrics, Software Testing, Software Maintenance and Configuration Management
  9. Technical Skills MCQ - Cloud Computing: Emerging Tech Trends, Cloud Computing and IoT
  10. Technical Skills MCQ - Cyber Security: Cyber and Info Security, Security in Mobile and Wireless Computing
  11. Technical Skills (Coding): Coding Questions by Yash Sir, C Programming by Yash Sir, Programming in C++, Java, Python for Placements by Yash Sir, Object Oriented Programming (OOPS)
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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