If the HCF of two numbers is $16$, which of the following values can never be their LCM?

A fundamental property of numbers states that the Highest Common Factor (HCF) must always perfectly divide the Lowest Common Multiple (LCM) of the same numbers.
Given $\text{HCF}=16$.

Let's check the options to see which one is not divisible by $16$:

* $\frac{80}{16}=5$ (Divisible)
* $\frac{112}{16}=7$ (Divisible)
* $\frac{134}{16}=8.375$ (Not perfectly divisible)
* $\frac{48}{16}=3$ (Divisible)

Since $134$ is not divisible by $16$, it can never be the LCM.