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Q: Why you need LCM and HCF in maths?

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lcm(9, 12) = 36; hcf(9, 12) = 3.

To find the LCM of 110 and 20, you first need to break them up into their prime factors: 110 = 2x5x11 20 = 2x2x5 The next step is to identify the HCF. In this case the HCF will be 2x5 = 10. To find the LCM you multiply the numbers together and divide by the HCF: 110x20/10 = 220. Thus the LCM of 110 and 20 is 220.

It helps to reduce fractions.

Write 100 and 120 in their prime compositions in power form: 100 = 223052 120 = 233151 For hcf, take lowest power of each prime across the compositions; for LCM, take highest powers: hcf = 223051 = 4 x 1 x 5 = 20 LCM = 233152 = 8 x 3 x 25 = 600

HCF means the highest common factor of two or more numbers. LCM means the lowest common multiple of two or more numbers.

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it means lowest common multiple. the opposite to it is hcf or highest common factor ^_^

LCM is 20 and the hcf is 10

HCF = 3... LCM = 18 !

HCF is 60 and the LCM is 360

hcf is 1 and LCM is 35

HCF is 48 and LCM is 576

hcf = 42, lcm = 84.

The HCF is: 2The LCM is: 2,520

The HCF is always a factor of the LCM of two numbers. The HCF is a factor of both the numbers which are factors of their LCM. Thus the HCF is also a factor of the LCM of the two numbers.

hcf: 1 lcm: 112,038

i really need help on maths home work can you help me thank you the maths is hcf of prime factors of 196 60 and 28 primes factors 735 and 639 prim factors

No. The LCM MUST be a multiple of the HCF.