14 = 7 x 2 & 49 = 7 x 7 '7' is common to both numbers, so seven is the HCF ( Highest common factor).
Multiples 21: 1,3,7,21Multiples 49: 1,7,49
7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98.
Highest Common Factor is 7 : 7 x 5 = 35 ; 7 x 7 = 49
The multiples of 7 from 7 to 100 are ...... 0, 7, 14, 21, 28, 35, 42, 49, 56, 63, 70, 77, 84, 91, 98, 105.
The GCF is 7.
The HCF of 21, 84 and 91 is.... 1 ! The number 91 is a prime number.
It is: 7
The GCF is 7.
The GCF is 7.
The GCF is 7.
The GCF is 7.
It is: 7
If you mean: 21, 49 and 84 then the HCF is 7
7
It is: 7
7 is the highest common factor of 21, 77 and 91.