Question

Điền các dấu \(\left(\in,\notin,\subset\right)\) thích hợp vào chỗ trống :

\(-2........\mathbb{Q}\)                             \(1......\mathbb{R}\)                        \(\sqrt{2}......\text{I}\)

\(-3\dfrac{1}{5}......\mathbb{Z}\)                       \(\sqrt{9}........\mathbb{N}\)               \(\mathbb{N}.......\mathbb{R}\)

Answer 1

$-\mathrm{2\; \backslash (\backslash in\backslash )\; Q}$ $\mathrm{1\; \backslash (\backslash in\backslash )\; R}$ $\sqrt{2}\text{(in) I}$

15......Z" id="MathJax-Element-18-Frame" role="presentation" style="border:0px; box-sizing:border-box; direction:ltr; display:inline-table; float:none; font-size:22.5px; font-style:normal; font-weight:normal; letter-spacing:normal; line-height:0; margin:0px; max-height:none; max-width:none; min-height:0px; min-width:0px; padding:1px 0px; position:relative; text-align:left; text-indent:0px; text-transform:none; white-space:nowrap; word-spacing:normal; word-wrap:normal" tabindex="0">15......Z $\sqrt{9}\mathrm{\backslash (\backslash in\backslash )\; N}$ $N\mathrm{\backslash (\backslash subset\backslash )\; R}$