49 = 7 x 7, 21 = 7 x 3, 91 = 7 x 13.
HCF is 7
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
There are an infinite number of fractions that are all equal to 21/49 .The one in lowest terms (simplest form) is 3/7.
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.
The GCF is 7.
It is: 7
If you mean: 21, 49 and 84 then the HCF is 7
7
It is: 7