The problem

Design a program that outputs 21 random numbers between 1 -1000. Display the numbers in an HTML table that is 3 columns wide and as many rows as needed. Your table borders need to be visible.
Modifications

1. Modify the program to allow the user to set the column number of the table. If random numbers do not complete the last row then fill in the empty spaces with cells with non-breaking spaces  
2. Modify the program to all the user to set the number of random numbers
3. modify the program to allow the user to set the ending range
4. modify the program to allow the user to set the starting range

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