How do i add two rows in a single cell using html : This is the code i have written.I have used rowspan to increase the cell  
`<tr>
    <th rowspan="2">Questions</th>
	<th>sub1</th>
    <th>sub2</th>
	<th>sub3</th>
	<th>sub4</th>
	<th>sub5</th>
	<th>sub6</th>
</tr>`