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The factors of 63, 36 and 18 have been listed in order to find their HCF. Find errors if any.

Factors of 63: 1, 3, 6, 7, 9, 21, 63.

Factors of 36: 1, 2, 3, 4, 6, 9, 12, 18, 36.

Factors of 18: 1, 2, 3, 6, 9, 18.

HCF: 6.

6 is not a factor of 63

6 is not a factor of 36

6 is not a factor of 18

No error.

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