Question $10$

Explain the difference between $\{0\}$ and $0.$

$\{0\}$ denotes the set containing one element, the element zero. Written without brackets, $0$ is not a set.

$\{0\}$ is the element zero, $0$ is the empty set, or a set with no elements.

$\{0\}$ is the element zero, $0$ is the set containing one element, the element zero.

$\{0\}$ is the empty set, or a set with no elements. $0$ is the set containing zero.

There is no difference.