We have:

\(4=2^2\)

\(8=2^3\)

\(10=2.5\)

\(\Rightarrow LCM\left(4;8;10\right)=2^3.5=40\)

We have:SCM

4=2^2

8=2^3

10=2.5

⇒SCM(4;8;10)=2^3.5=8.5=40

4=2²

8=2³

10=2.5

BCNN (4;8;10)=2³.5=40

4 = 2^2

8 = 2^3

10 = 2.5

=> BCNN\(\left(4,8,10\right)=2^3\cdot5=40\)