1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84
1, 7, 13, 91
The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 91 are: 1, 7, 13, 91
The factors of 49 are 1, 7, and 49 The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84 The factors of 91 are 1, 7, 13, and 91
The factors of 49 are: 1, 7, 49 The factors of 84 are: 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84 The factors of 91 are: 1, 7, 13, 91
The GCF of 28, 84, and 91 is 7.
It is: 7
Apart from 1, the only positive integer common factor of 49, 84, and 91 is 7.
The GCF is 7.
Well, isn't that a happy little math question! To find the highest common factor (HCF) of 28, 84, and 91, we can start by listing the factors of each number. The factors of 28 are 1, 2, 4, 7, 14, and 28. The factors of 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84. The factors of 91 are 1, 7, 13, and 91. The largest number that appears in all three lists is 7, so the HCF of 28, 84, and 91 is 7.
91
The GCF is 7.
91 + 84 = 175
The GCF of 84 and 91 is 7.