The number(s) that will go into 105 are 1, 3, 5, 7, 15, 21, 35, and 105.
7 can go into 21 and 105. And three!
3
The smallest number into which both 7 and 15 can be divided evenly is 105.
105
1 and 3
3,5,
Try 7.
It is: 105
The answer is 16800.
5, 7, and 3 go into 105.
The hcf is 21