When you think about a problem, you must learn to get out of the old ways. Think or observe from every possible angle. For example:Here is the Roman numeral IX.
Can you add just one mark or symbol to this Roman numeral,and change it into the number 6? Think for a minute.
If you haven't figured it out yet,well, simply add an "S" in front of the letters IX, and you've formed the word "SIX." People who have a habit of thinking about things from lots of angles will solve this problem very quickly!