Find Hcf of the 42 and 84 by listing factors
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The common factors of 42 and 84 are 42, 21, 14, 7, 6, 3, 2, 1, intersecting the two sets above. In the intersection factors of 42 ∩ factors of 84 the greatest element is 42. Therefore, the greatest common factor of 42 and 84 is 42.
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HCF OF 42 And 84
42 = 2 x 3 x 7
84 = 2 x 2 x 3 x 7
= 2² x 3 x 7
HCF of 42 and 84 is 2 x 3 x 7
= 42
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