The number $5$ under multiplication of real numbers
Terms
| Term | This example | Why |
|---|---|---|
| inverse element | $\frac{1}{5}$, because $5 \times \frac{1}{5} = 1$ | For multiplication of real numbers, the identity element is $1$, so the inverse of $5$ is the number $\frac{1}{5}$ whose product with $5$ is $1$; the number $0$ has no inverse for multiplication, because $0$ times every number is $0$. |