Only one can be least; that's 15. Other common multiples include 30 and 45.
15, 30, 45, 60 and so on.
10, and all its multiples.
10, 20, 30 and so on.
Multiples of 23 and 5? 115 and 575
150
Just 1.
495
60
The GCF is 1.
The LCM is: 210
The Least Common Multiple (LCM) for 6 5 is 30.