HCF of 168 and 126 is
(a) 21 (b) 42 (c) 14 (d) 18
CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic
CBSE Class 10 Sample Paper for 2020 Boards - Maths Basic
Last updated at Dec. 16, 2024 by Teachoo
Transcript
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