Q1 of 40 Page 1

HCF of 168 and 126 is

Prime factorization of 126: 126 = 2 × 3 × 3 × 7


Prime factorization of 168: 168 = 2 × 2 × 2 × 3 × 7


Therefore, HCF = 2 × 3 × 7 = 42

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