Find LCM,HCF of 12,15,21
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Prime factorization of 12, 15 and 21 is (2 × 2 × 3), (3 × 5) and (3 × 7) respectively. As visible, 12, 15 and 21 have only one common prime factor i.e. 3. Hence, the HCF of 12, 15 and 21 is 3.
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LCM and HCF is 3
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