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The GCF is 2.
It is: 2
The GCF is 4.
4
1702. The hcf of 46 and 37 is 1, so lcm = 46 x 37 = 1702.
hcf = 4 and lcm = 420
The HCF of 4 and 90 is 2.
The HCF of 4 and 5 is 1.