15, 30, 45, 60, 75, 90
They are the six multiples of 15.
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
The common multiples of 3 and 15 from 1 to 100 are 15, 30, 45, 60, 75, and 90.
The common multiples of 3 and 15 from 1 to 100 are 15, 30, 45, 60, 75, 90
15,30,45,60,75,90
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.
3:3,6,9,12,15,18,21,24,27,30,33,36,39,42,45,48,51,54,57,60,63,66,69,72,75,78,81,84,87,90,93,96,99 15:15,30,45,60,75,90,105
All multiples of 90.
30 and all its multiples
The common multiples of 3 and 15 in the numbers 1-100: 15, 30, 45, 60, 75, 90
60 and all its multiples
15,30,45,60,75, and 90