find the hcf and lcm 20 and 120by prime factorisation. method
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HCF of (20 and 120)-
20- 2x2x5
120- 2x6x2x5
HCF=2and5
LCM of (20 and 120)=2x2x5x6
=120
Therefore, the HCF is 2and5. And LCM is 120.
20- 2x2x5
120- 2x6x2x5
HCF=2and5
LCM of (20 and 120)=2x2x5x6
=120
Therefore, the HCF is 2and5. And LCM is 120.
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