The least common multiple and greatest common factor of the following questions: (30 and 45) (5 and 9) (34 and 17) (18 and 72) (15 and 16)

The least common multiple and greatest common factor of the following questions: (30 and 45) (5 and 9) (34 and 17) (18 and 72) (15 and 16)

The greatest common factor of 30 and 45 is 15, and the least common multiple is 90
The greatest common factor of 5 and 9 is 1 and the least common multiple is 45
34 and 17 the greatest common factor is 17 and the least common multiple is 34
18 and 72 the greatest common factor is 18 and the least common multiple is 72
The greatest common factor of 15 and 16 is 1, and the least common multiple is 240