Respuesta :

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Answer:

HCF is 60

Step-by-step explanation:

2|120|. 2|180|

2|60|. 2|90|

2|30|. 3|45|

3|15|. 3|15|

5|5|. 5|5|

1. 1

120= 2×2×2×3×5×1

170=2×2×3×3×5×1

HCF =2×2×3×5×1

=60

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