Question

mmc de 30, 45, 75, 90

Answer 1

30, 45, 75, 90|2
15, 45, 75, 45|3
5,  15, 25, 15|3
5, 5, 25, 5|5
1, 1, 5, 1|5
1,1,1,1/

logo.
3.3.5.5=225