find the HCF and LCM of the given number by prime factorization method 189. 429
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prime factorization of 189 = 3 × 3 × 3 × 7
prime factorization of 429 = 3 × 11 × 13
common factor of 189 and 429 = 3
therefore the HCF of 189 and 429 = 3
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