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Algebra

Cool goIITian

Joined:	24 Oct 2008
Post:	69

4 Feb 2010 16:53:18 IST

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S.T. 1111....1(2006) times is not a prime.

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S.T. 1111....1(2006) times is not a prime.

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newton

Blazing goIITian

Joined: 30 Nov 2009

Posts: 333

4 Feb 2010 16:58:57 IST

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111111111111(2006)times will be divisible by eleven

since (11) repeated even no. of times is always divisible by 11

eg.>>>> (1111) / (11) = 101

>>>>(111111)/(11) =10101

nd so on

newton

Blazing goIITian

Joined: 30 Nov 2009

Posts: 333

4 Feb 2010 17:02:41 IST

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did u understand?

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