A. \[x \in \left\{ {2;3;4;5;6} \right\}\]
B. \[x \in \left\{ {3,4;5;6} \right\}\]
C. \[x \in \left\{ {2;3,4;5} \right\}\]
D. \[x \in \left\{ {3,4;5;6;7} \right\}\]
\[6\frac{1}{3}:4\frac{2}{9} < x < \left( {10\frac{2}{9} + 2\frac{2}{5}} \right) - 6\frac{2}{9}\]
\[\begin{array}{l}\frac{{19}}{3}:\frac{{38}}{9} < x < \frac{{92}}{9} + \frac{{12}}{5} - \frac{{56}}{9}\\\frac{3}{2} < x < \frac{{32}}{5}\end{array}\]
Ta có:
\[\begin{array}{l}\frac{3}{2} < x < \frac{{32}}{5}\\1,5 < x < 6,4\end{array}\]>
Vì x là số tự nhiên nên \[x \in \left\{ {2;3;4;5;6} \right\}\]
Đáp án cần chọn là: A
>>a) 125dm2b) 218cm2c) 240dm2d) 34cm2
\[3\frac{3}{4}\] tạ; \[\frac{{377}}{{100}}\] tạ; \[\frac{7}{2}\] tạ; \[3\frac{{45}}{{100}}\] tạ; 365 kg.