Question

Find the LCM and HCF of
16 and 20 by the prime
factorisation method.​

Answer 1

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The prime factorization of 20 is: 2 x 2 x 5. Eliminate the duplicate factors of the two lists, then multiply them once with the remaining factors of the lists to get lcm(16,16) = 80.

• Least common multiple (LCM) of 16 and 20 is 80.Jul 2, 2020

Answer 2

Answer:

• HCF= 4
• LCM= 80

Step-by-step explanation:

• 16= 2*2*2*2
• 20=2*2*5

• HCF=2*2=4
• LCM=2*2*2*2*5=80