Question
H.C.F of 45, 81 and 27 is _____.
Answer: Option C
:
C
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:
C
Factors of 45 = 1, 3, 5, 9, 15, 45
Factors of 81 = 1, 3, 9, 27, 81
Factors of 27 = 1, 3, 9, 27
∴ The common factors of 45, 81 and 27 are 1, 3 and 9.
So, the H.C.F of 45, 81 and 27 = 9.
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