What are the columns on the Number table? What column are you trying to display? My guess is that there is no column called "Number", and therefore you are getting nothing from $row['Number']. If you want to display all columns in the matched row, you might try something like:
Code:
while($row = mysql_fetch_array($result)) {
foreach($row as $col) { // for every element in the $row array, get the value
echo $col;
}
echo "<br>"; // to seperate the rows
}
Hope that helps