I'm pretty sure it's 40.
The LCM of 4, 5, and 8 is 40.
The LCM is 40.
The LCM is: 40
The LCM is 40.
The LCM is 40.
The LCM is 40.
The LCM is 40.
The least common multiple of 4, 8, and 10 is 40. (4x10=40, 8x5=40, and 10x4=40.
It is: 40
40
The LCM is 840.
40 is not the LCM of 9 and 4.