Factor them.
3 x 5 x 5 x 5 = 375
3 x 139 = 417
Select the common factors.
The GCF is 3.
Combine the factors, eliminating duplicates.
3 x 5 x 5 x 5 x 139 = 52125, the LCM
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LCM = Product/HCF = 384
Yes: product of a & b = LCM x HCF so b = (LCM x HCF)/a
The HCF is: 2The LCM is: 2,520
hcf = 42, lcm = 84.
HCF is 48 and LCM is 576