Find the HCF of 28, 84 and 140 by prime factorization method.
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Answer:
28
Step-by-step explanation:
Factors of 28 = 2 x 2 x 7
Factors of 84 = 2 x 2 x 3 x 7
Factors of 140 = 2 x 2 x 5 x 7
We take the number which is common in all three.
HCF = 2 x 2 x 7
= 28
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