The least common multiple (LCM) of 8 and 4 is 8. Any time you have two numbers and the smaller number can go evenly into the bigger number the LCM will be the higher of the two numbers.
I.e.
Least Common Multiple (LCM) for 4 8 is 8.
The Least Common Multiple (LCM) for 4 8 2 is 8
The least common multiple of 4, 5, and 8 is 40.
The Least Common Multiple (LCM) for 3 4 8 is 24.
The Least Common Multiple (LCM) of 4, 8, and 32 is 32.
The least common multiple of 4, 8, and 16 is 16.
The Least Common Multiple (LCM) for 8 4 3 is 24.
The least common multiple of 3, 4, and 8 is 24.
The Least Common Multiple (LCM) for 4 8 13 is 104.
The Least Common Multiple (LCM) for 4 5 8 10 is 40.
For 10, 8, 4 the LCM is: 40
It is: 8