Art of Problem Solving
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2007 iTest Problems/Problem 11: Revision history

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10 June 2018

4 October 2014

  • curprev 21:5221:52, 4 October 2014 Timneh talk contribs m 431 bytes +431 Created page with "== Problem 11 == Consider the "tower of power" <math>2^{2^{2^{\cdot^{\cdot^\cdot^{2}}}}}</math>, where there are 2007 twos including the base. What is the last (units digit) of t..."