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HCF of 168 and 126 is

(a) 21          (b) 42          (c) 14          (d) 18

HCF of 168 and 126 is (a) 21 (b) 42 (c) 14 (d) 18 - Teachoo

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Question 1 HCF of 168 and 126 is (a) 21 (b) 42 (c) 14 (d) 18 Doing prime factorization of both 168 and 126 168 = 2 × 2 × 2 × 3 × 7 126 = 2 × 3 × 3 × 7 ∴ HCF = 2 × 3 × 7 = 42 So, (b) is the correct answer

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 13 years. He provides courses for Maths, Science, Social Science, Physics, Chemistry, Computer Science at Teachoo.