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Carine Mujinga ∙
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The GCF is 21.
The GCF is 24.
The GCF is 7.
It is: 21
The HCF of 21, 84 and 91 is.... 1 ! The number 91 is a prime number.
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It is: 7
If you mean: 21, 49 and 84 then the HCF is 7