How about: 12, 16 and 24
20 and 100.GCF is 20, and LCM is 100.
The pair of numbers whose GCF is 1 and LCM is 36 is 9 and 4. The numbers should be greater than their GCF and less than their LCM.
The GCF of 6 and 10 is 2.
12 and 66
3 and 360
18 and 81
12 and 216
3 and 360
11 and 5
the two smallest numbers are 49 and 14
10 and 120
126 and 90 (trial and error gets you the answer)