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# Greatest common factors of 21 and 84?

Updated: 4/28/2022

Wiki User

15y ago

The g. c. f. of 21 and 84 is 21.

Wiki User

15y ago

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Q: Greatest common factors of 21 and 84?
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### What are the greastest common factors of 21 and 84?

The greatest common factor of the numbers 21 and 84 is 21.

### What are the common factors and greatest common factor of 21 and 84?

Since 21 is a factor of 84, it is automatically the GCF and all of its factors are common.

### What are the greatest common factors for 21 and 84?

Since 21 is a factor of 84, it is automatically the GCF.

### What is the greatest common factors of 84 and 105?

The GCF of 84 and 105 is 21.The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, and 84.The factors of 105 are 1, 3, 5, 7, 15, 21, 35, and 105.The greatest number they have in common (Hint hint, greatest common factor) is 21.

The GCF is 21.

### What are the common factors of 21 42 and 84?

The common factors of 21 42 and 84 are 21

### What is the greatest common factor of 21 63 and 84?

The Greatest Common Factor of 21, 63, 84: 21

### What are common factors of 21 and 84?

Since 21 is a factor of 84, all of its factors are common.

### What are the factors and greatest common factor of 84?

The factors of 84 are 1,2,3,4,6,7,12,14,21,28,42 and 84. To find a greatest common factor, you need to compare them to another number's factors.

### Greatest common factor of 63 84 and 105?

The greatest common factor of 63, 84, and 105 is 21.

### What are all the common factors of 84 and 105 and the GCF of each pair?

The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 105 are: 1, 3, 5, 7, 15, 21, 35, 105 The common factors are: 1, 3, 7, 21 The Greatest Common Factor: GCF = 21

### What is the greatest common factor of 63and 84?

The greatest common factor of 63 , 84 = 21