Answer :
the HCF of 12 and 28 -
factors of 12 are 1,2,3,4,6 and 12
factors of 28 are 1,2,4,7,14 and 28
THE COMMON FACTORS- 1,2 and 4
HCF= 4
factors of 12 are 1,2,3,4,6 and 12
factors of 28 are 1,2,4,7,14 and 28
THE COMMON FACTORS- 1,2 and 4
HCF= 4