Quote:
Originally posted by crab
The simple trick is that all multiples of 9... 9, 18, 27, 36... whatever.... have digits that add up to 9... so no matter what number you choose, you'll end up with a multiple of 9 in the end.... and 9-5=4.... and d=4..... and there aren't too many countries that start with D... 98% of ppl choose Denmark, 2% choose Dominican Republic or Deutschland or Dominica, etc...... 
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REalistically Denmark is the only country most people know of that begins with D
