![Find the common factors and the HCF of 96 and 275 [Class 7 Part 2] - Finding HCF using Prime Factorisation](https://cdn.teachoo.com/344053c7-071f-4061-91ac-f5331d329e39/slide63.jpg)
Example 3 - Chapter 3 Class 7 - Finding Common Ground (Ganita Prakash II)
Last updated at January 22, 2026 by Teachoo
Finding HCF using Prime Factorisation
Finding HCF using Prime Factorisation
You are here
You are here
Class 7 (Ganita Prakash 1, 2 & old NCERT)
Chapter 3 Class 7 - Finding Common Ground (Ganita Prakash II)
- The Greatest of All
- Prime Factorisation
-
Finding HCF using Prime Factorisation
- Figure it out - Page 54
- Least, but not Last!
- Finding LCM using Prime Factorisation
- Patterns, Properties, and a Pretty Procedure!
- Figure it out - Page 59
- Miscellenaous Questions on HCF, LCM
- Efficient Procedures for HCF and LCM
- Property Involving both the HCF and the LCM
- Figure it out - Page 63, 64
Transcript
Example 3 Find the common factors and the HCF of 96 and 275.Let’s find Prime Factorisation of both 96 & 275 Now, 96 = 2 × 2 × 2 × 2 × 2 × 3 275 = 5 × 5 × 11 Since there are no common prime factors , only 1 will be the common factor ∴ HCF = 1 Common Factors of 96 & 275 Since 96 = 2 × 2 × 2 × 2 × 2 × 3 275 = 5 × 5 × 11 Only 1 is the common factor, and that is also the highest common factor
