[Math] Make the number $100$ out of digits $1$, $2$, $3$, $4$, without repeats

Question

How can we make the number $100$, using only the following digits: $1$, $2$, $3$, $4$. You cannot repeat any of them.

Answer 1

Using only basic arithmetic:

$$ \frac{4\times 3}{.12} =100 $$