Question

Find the HFC of following by listing common factor. 27 and81

Answer 1

Answer:

27= 3×3×3, 81=9×9

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Answer 2

Answer:

27=3×3×3×3 ,

81=3×3×3×3×3 ,

common factors=3×3×3×3=27

, so the HCF of 27 and 81 is 27