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Q: What is the HCF and LCM of 42 and 84?

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84 and 14, respectively.

Whenever one of the numbers is a multiple of the other, the larger number is the LCM and the smaller number is the GCF. In this case, the difference between them is 42. The highest common multiple of any set of integers is infinite.

7

The GCF is 2.

The GCF is 21.

The LCM is 84.

The LCM would be 84, since 42 divides into 84 exactly twice !

84

LCM = product/HCF; HCF is 6 so LCM = 12 x 42 = 504

6

42 ( 84 = 42 x 2, 126 = 42 x 3)

LCM of 42 and 12 is 84

The LCM of 12 and 42 is 84.

The LCM of 24, 42, and 84 is 168.

84

LCM(21, 28, 42) = 84

Whenever one number is a multiple of the other, the LCM is the larger number and the GCF is the smaller number. The difference is 42.

The GCF is 42.

The LCM is: 126

Least Common Multiple (LCM) for 42 84 is 84. Since 84 is a multiple of 42, it is automatically the LCM.

It is: 21

7

It is 7

It is 7

It is 7