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Find the HCF of 1/2, 3/4, and 4/5?

1/20
1/40
20
15

Correct Answer: 1/20

Explanation:

Required HCF = (HCF of numerators) / (LCM of denominators)
= (HCF of 1, 3 and 4) / (LCM of 2, 4, and 5)
= 1/20

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