Re: square numbers
From: Ignacio Larrosa Cañestro (ilarrosaQUITARMAYUSCULAS_at_mundo-r.com)
Date: 02/27/05
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Date: Sun, 27 Feb 2005 20:01:27 +0100
En el mensaje:cvt3lt$1i7$1@mailhub227.itcs.purdue.edu,
Kanchan Hulasare <kanchan_h@hotmail.com> escribió:
> could anyone help me with this problem?
>
> What is 100^2-99^2+98^2-97^2+96^2........-1^2.
>
> I have know idea how to do it.
>
> Thanks in advance
Hint:
(n+1)^2 - n^2 = n^2 + 2n + 1 - n^2 = 2n + 1
-- Best regards, Ignacio Larrosa Cañestro A Coruña (España) ilarrosaQUITARMAYUSCULAS@mundo-r.com
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