1
$\left\{ x\in \mathbb{R}\left| -۱\le x\lt ۴ \right. \right\}$
✓
✗
2
$\left\{ x\in \mathbb{Q}\left| -۱\le x\lt ۴ \right. \right\}$
✓
✗
3
$\left\{ x\in \mathbb{R}\left| -۱\lt x\le ۴ \right. \right\}$
✓
✗
4
$\left\{ x\in \mathbb{Q}\left| -۱\lt x\le ۴ \right. \right\}$
✓
✗