A Broken Calculator
This particular instance of the ubiquitous tool happens to malfunction. Obviously, the calculator cannot serve its intended general purpose. Instead, the task is to somehow compute the integers from 1 through 15 with the limited means the calculator offers. 15 numbers may be computed in any order. Those already computed will be listed in the space just above the calculator.
Copyright © 1996-2009 Alexander Bogomolny
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