UPSC Exam > UPSC Videos > CSAT Preparation > HCF & LCM
HCF & LCM Video Lecture - CSAT Preparation - UPSC
FAQs on HCF & LCM Video Lecture - CSAT Preparation - UPSC
| 1. What is the meaning of HCF and LCM? |  |
Ans. HCF stands for Highest Common Factor, which is the largest number that divides two or more numbers without leaving a remainder. LCM stands for Lowest Common Multiple, which is the smallest number that is a multiple of two or more numbers.
| 2. How can HCF be calculated using prime factorization? | |
Ans. To calculate HCF using prime factorization, first express each number as a product of its prime factors. Then, identify the common prime factors and take the lowest power of each common factor. Multiply these together to obtain the HCF.
| 3. What is the relationship between HCF and LCM? | |
Ans. The relationship between HCF and LCM can be expressed through the formula: HCF(a, b) × LCM(a, b) = a × b, where a and b are any two integers. This means that the product of the HCF and LCM of two numbers equals the product of the numbers themselves.
| 4. Can HCF and LCM be found using the division method? | |
Ans. Yes, HCF and LCM can be found using the division method. For HCF, repeatedly divide the numbers by their common factors until no common factors remain. For LCM, use the same division method to find the product of the factors divided, including the remaining numbers.
| 5. How are HCF and LCM useful in real-life applications? | |
Ans. HCF and LCM are useful in various real-life applications such as simplifying fractions, finding common denominators, and solving problems related to scheduling, where events need to occur simultaneously or at regular intervals.
About this Video
4.69/5 Rating
Feb 16, 2026 Last updated
Related Exams
Video Description: HCF & LCM for UPSC 2026 is part of CSAT Preparation preparation. The notes and questions for HCF & LCM have been prepared according to the UPSC exam syllabus. Information about HCF & LCM covers all important topics for UPSC 2026 Exam. Find important definitions, questions, notes, meanings, examples, exercises and tests below for HCF & LCM.
Introduction of HCF & LCM in English is available as part of our CSAT Preparation for UPSC & HCF & LCM in Hindi for CSAT Preparation course. Download more important topics related with notes, lectures and mock test series for UPSC Exam by signing up for free.
Description
Video/Audio Lecture & Questions for HCF & LCM Video Lecture | CSAT Preparation - UPSC - UPSC full syllabus preparation | Free video for UPSC exam to prepare for CSAT Preparation.
Information about HCF & LCM
Here you can find the meaning of HCF & LCM defined & explained in the simplest way possible. Besides explaining types of HCF & LCM theory, EduRev gives you an ample number of questions to practice HCF & LCM tests, examples and also practice UPSC tests.
205 videos|287 docs|137 tests |
 | Explore Courses for UPSC exam |  |
Related Searches
Objective type Questions, Sample Paper, Viva Questions, HCF & LCM Video Lecture | CSAT Preparation - UPSC, Important questions, Summary, Semester Notes, pdf , Previous Year Questions with Solutions, Exam, HCF & LCM Video Lecture | CSAT Preparation - UPSC, video lectures, shortcuts and tricks, mock tests for examination, MCQs, past year papers, study material, HCF & LCM Video Lecture | CSAT Preparation - UPSC, ppt, Extra Questions, practice quizzes, Free;