Question

find the hcf of the number in each of the following using the prime factorization method 72, 108 and 180

Answer 1

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Answer 2

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• 72 = 2 × 2 × 2 × 3 × 3

• 108 = 2 × 2 × 3 × 3 × 3

• 180 = 2 × 2 × 3 × 3 × 5

• HCF = 2 × 2 × 3 × 3

• HCF = 36

Hence,

• HCF of 72 , 108 , 180 is 36.