Question (b) - Page 53 (Figure it out) - Finding HCF using Prime Factorisation - Chapter 3 Class 7 - Finding Common Ground (Ganita Prakash II)

Last updated at August 14, 2026 by

[Class 7] Find the common factors and the HCF of the numbers 140, 275 - Finding HCF using Prime Factorisation

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Question (b) - Page 53 (Figure it out) Find the common factors and the HCF of the following numbers: (b) 140, 275Let’s find Prime Factorisation of both 140 & 275 Now, 140 = 2 × 2 × 5 × 7 275 = 5 × 5 × 11 HCF of 140, 275 = 5

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