They are all multiples of 3.
1, 3, 5 and 15
The common multiples of 15 and 25 are all multiples of their LCM, which is 75. So, the common multiples are 75, 150, 225, 300, 375, 450, 525, 600, and so on.
15, 30, 45, 60, 75, 90
Multiples of 3 are 3, 6, 9, 12, 15, 18, 21, 24, 27, 30, and so on. Multiples of 5 are 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, adn so on. The common multiples of 3 and 5 are all of the multiples of 15, i.e. 15, 30, 45, 60, 75, 90, and so on.
120 and all its multiples.
The multiples of 15 are 15, 30, 45, 60, 75 and so on. For them to be common, they need to be compared to another set of multiples.
All multiples of 90.
They are all multiples of 3.
30 and all its multiples
No. No one can. Multiples are infinite.
They have to be multiples of 15 so all of them will be multiples of 3. They all have to be even so you are left with 30, 60, 90
60 and all its multiples
It is a list of three integers which are all multiples of 15.
You can not name ALL the multiples, it would go on forever! 15 30 45 60 75 90 105 etc, keep adding 15!
1, 3, 5, 15
1, 3, 5 and 15