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 Power - ful (Posted on 2003-12-31)
What is the last digit of the number:

8^(7^(6^(5^(4^(3^(2^1))))))

[(a)^b implies 'a' raised to the power of 'b', ((a)^b)^c implies 'a' raised to the power 'bc', but a^(b^c) implies 'a' raised to the power 'b' raised to the power 'c'.]

 See The Solution Submitted by Ravi Raja Rating: 3.4000 (5 votes)

Comments: ( You must be logged in to post comments.)
 Subject Author Date answer K Sengupta 2008-02-07 05:11:54 Solution Praneeth 2007-07-26 12:02:24 just how big is it Daniel 2006-07-03 02:13:36 re: Possible Solution P C 2004-02-04 21:47:04 Possible Solution Kerry Graham 2004-01-06 11:00:28 Solution John Miller 2004-01-01 18:09:33 Solution Dan Blume 2003-12-31 15:10:16 re: Charlie 2003-12-31 10:58:39 No Subject luminita 2003-12-31 10:41:34 solution Charlie 2003-12-31 10:35:24 Almost (50%) there Federico Kereki 2003-12-31 09:58:58
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