find the greatest common factor of the numbers:
16 and 20
40 and 90
24 and 54
18 and 44
42 and 28
13 and 39
35 and 56
24 and 56
15 and 50
28 and 49
thank u
16 and 20
40 and 90
24 and 54
18 and 44
42 and 28
13 and 39
35 and 56
24 and 56
15 and 50
28 and 49
thank u
