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Best Answer

'Step ladder' to find the factors.

3)57 = 19

  1. 19 = 1

&

3)69 = 23

23)23 = 1

The Only and greatesty common factor (GCF) is '3' .

NB '19' & '23' are prime numberd and have no common factors.

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lenpollock

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5mo ago
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9y ago

The GCF is 3.

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Wiki User

14y ago

HCF(57, 69) = 3

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Q: What greatest common factor of 57 and 69?
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