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Old 07-30-03, 06:11 PM   #3 (permalink)
cageyjames
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RPN or Reverse Polish Notation is different that a simple calculator. To do your example you do the following:

2 enter
2 enter
+

That will give you the result of 4...

Learn more here...

http://www.hp.com/calculators/articles/rpn.html
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