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Square String Settlement (Posted on 2010-01-28) Difficulty: 2 of 5
All the positive perfect squares 1, 4, 9, 16, 25.... are written in strictly ascending order of magnitude and without the commas and spaces, resulting in the following infinite string:

149162536496481100121144......

Reading left to right, what is the 2010th digit in the above pattern?

See The Solution Submitted by K Sengupta    
Rating: 3.0000 (1 votes)

Comments: ( Back to comment list | You must be logged in to post comments.)
re(2): re: Computer verification #2 | Comment 7 of 8 |
(In reply to re: re: Computer verification #2 by Jim Keneipp)

It reserves a space for a sign character, where a blank is equivalent to plus, but a negative number gets an explicit "-" in this position, so, for example positive and negative 4 each get a string of length 2, one being blank and "4" and the other being "-4".
  Posted by Charlie on 2010-01-28 17:09:57

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