I did the following to get these numbers:

I repeated "The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog." to fill one page using Microsoft Office Word 2007. I then saved the one page and the file size was 10KB. If I use that number I can store the page 204,800 times to take up all of the space on the memory stick.
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I did the following to get these numbers:

I repeated "The quick brown fox jumped over the lazy dog. The quick brown fox jumped over the lazy dog." to fill one page using Microsoft Office Word 2007. I then saved the one page and the file size was 10KB. If I use that number I can store the page 204,800 times to take up all of the space on the memory stick.

That would equal 409.6 reams (500 sheets) of paper. If you use the standard 20 lb. copy paper, you would have 409.6 X 5.00 lbs. = 2048 lbs of paper.

How Much Paper is in One Tree?

It really all depends on the size of the tree. According to paper manufacturer Boise Cascade, however, a cord of wood (wood stacked 4 feet by 4 feet by 8 feet, or 128 cubic feet) produces nearly 90,000 sheets of paper.

Using this number as 1 tree, you should be able to get 2.275 trees on a 2GB memory stick.