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What is the greatest common factor or 21 and 84? explain what you did to get this.
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What is the greatest common factor or 21 and 84? explain what you did to get this.

User Schurik
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17 greatest factor of 84 and 21 greatest factor is 21
User Rendy
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The greatest common factor (GCF) of 21 and 84 is 21.

The GCF is the largest number by which both numbers can be divided. Between 21 and 84, it is 21 because 21/21=1 and 84/21=4.
User Peter Elliott
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