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September 22nd, 2012, 07:51 PM  #1 
Senior Member Joined: Apr 2012 Posts: 799 Thanks: 1  integer part of S
[attachment=0:1henah5g]integeral part of S.jpg[/attachment:1henah5g]

September 22nd, 2012, 09:22 PM  #2 
Senior Member Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,211 Thanks: 520 Math Focus: Calculus/ODEs  Re: integer part of S
Squaring gives: Hence, taking the positive root, and using the floor function to return the integral portion, we find: 
September 23rd, 2012, 04:46 AM  #3 
Math Team Joined: Mar 2012 From: India, West Bengal Posts: 3,871 Thanks: 86 Math Focus: Number Theory  Re: integer part of S
If the question is to find the integral part of , then it is impossible to find it. Since we do not know how many times 1991 is nested under the square root sign. The question should be asking to find the integral part of 

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