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The GCF is 21.
HCF(21, 42, 84) = 21.
It is: 21
HCF is 21
7
The GCF is 2.
The GCF is 7.
hcf = 42, lcm = 84.
The GCF is 24.
The GCF is 42.
42 ( 84 = 42 x 2, 126 = 42 x 3)
It is 7