Answer :
[tex]12|2\\.\ 6|2\\.\ 3|3\\.\ 1|\\==========\\49|7\\.\ 7|7\\.\ 1|\\==========\\\\HCF(12;\ 49)=1[/tex]
Factors of 12 . . . . . 1, 2, 3, 4, 6, 12
Factors of 49 . . . . . 1, 7, 49
Common factors . . . 1
Highest common factor . . . 1
Factors of 49 . . . . . 1, 7, 49
Common factors . . . 1
Highest common factor . . . 1