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