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Q: What is the LCM and HCF of 28 and 42?

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6

hcf = 42, lcm = 84.

The GCF is 14.

The LCM is: 126

4 and 336, respectively.

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

2

LCM of 14 28 42 is 84.

LCM(21, 28, 42) = 84

The LCM is: 84

The LCM is: 84

The HCF of 28, 42 & 56... is 14 !

The Least Common Multiple (LCM) for 7 28 42 is 84.

The GCF is 14.

14 and 196, respectively.

The LCM is: 84

252 is the LCM.

84

The LCM is: 420

To find the LCM of 56 and 42, you first have to break them down into their prime factors: 56 = 2x2x2x7 42 = 2x3x7 The next step is to work out the HCF. In this case that will be 2x7 = 14. Finally, you multiply the numbers together and divide by the HCF. 56x42/14 = 168. Therefore the LCM of 56 and 42 is 168.

84

252

420

588

84