ejercicio 2

Ejercicio solucionado de tablas combinadas. 1 2 3 4 5 6 7 8 9 10 11 12 13 <table width="29%" border="1" > <tr> <td align="center" valign="middle">1</td> <td align="center" valign="middle">2</td> <td align="center" valign="middle">3</td> <td align="center" valign="middle">4</td> </tr> <tr> <td align="center" valign="middle">5</td> <td colspan="2" rowspan="2" align="center" valign="middle">6</td> <td align="center" valign="middle">7</td> </tr> <tr> <td align="center" valign="middle">8</td> <td align="center" valign="middle">9</td> </tr> <tr> <td align="center" valign="middle">10</td> <td align="center" valign="middle">11</td> <td align="center" valign="middle">12</td> <td align="center" valign="middle">13</td> </tr> </table> Tomado de:el injeniero