Do you mean, what are the common factors of 49, 21, and 91? Only 7 (and 1, of course) is a common factor for those numbers. Individually, 49's factors are 1, 7 and itself. 21's factors are 1, 3, 7, and itself. 91's factors are 1, 7, 13, and itself.
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 factors of 21 are 1, 3, 7, and 21. The factors of 49 are 1, 7, and 49.
Factors or 21 are: 1 3 7 21 Factors or 49 are: 1 7 49 Common factors of 21 and 49 are: 1 and 7
The factors of 637 are: 1 7 13 49 91 637
Factors of 21 are 3 and 7 (21=3x7). Factors of 35 are 5 and 7 (35=5x7). Factors of 49 are 7 and 7 (49=7x7).
49 = 7 x 7, 21 = 7 x 3, 91 = 7 x 13. HCF is 7
The factors of 21 are 1, 3, 7, 21 The factors of 49 are 1, 7, 49 The largest matching number is 7 so 7 is the GCF of 21 and 49.
The LCM is: 441
the factors of 21 are 3,7,1, 21,and -1, -21,-3,-7. the factors of 49 are 1,49,7,7 and -1, -21-7-7.
The GCF is 7.
Apart from 1, the only positive integer common factor of 49, 84, and 91 is 7.