<span>The factors of 98 are 98, 49, 14, 7, 2, 1. The factors of 42 are 42, 21, 14, 7, 6, 3, 2, 1.<span> The common factors of 98 and 42 are 14, 7, 2, 1, </span><span>In the intersection numbers of 98 & factors of 42 the largest number is 14. </span><span>So, the greatest common factor of 98 and 42 is 14.</span></span>
The highest common factor is 14. - <span>The factors of 98 are 98, 49, 14, 7, 2, 1. - </span><span>The factors of 42 are 42, 21, 14, 7, 6, 3, 2, 1. - </span><span>The common factors of 98 and 42 are 14, 7, 2, 1, intersecting the two sets above. - </span><span>In the intersection factors of 98 ∩ factors of 42 the greatest element is 14. - </span><span>Therefore, the highwat common factor of 98 and 42 is 14.</span>