H.C.F of 45, 81 and 27 is _____.

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Solution

The correct option is C
9

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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