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New kid on the Block

Joined: 30 Nov 2011
Post: 9
30 Nov 2011 09:58:14 IST
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use your brain
None

what is--- (x-1)(x-2)(x-3)(x-4).......(x-n)        where x,n belongs to N


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New kid on the Block

Joined: 1 Dec 2011
Posts: 2
1 Dec 2011 20:48:26 IST
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 x=5 n=10


New kid on the Block

Joined: 1 Dec 2011
Posts: 2
1 Dec 2011 20:53:37 IST
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(x-5)(x+6)=26 what is x
santanu sinha's Avatar

Cool goIITian

Joined: 19 Mar 2011
Posts: 74
1 Dec 2011 21:33:40 IST
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xPn ???
Pranava Keerthi's Avatar

New kid on the Block

Joined: 9 Dec 2011
Posts: 2
9 Dec 2011 21:04:29 IST
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the whole term becomes 0 because we get (x-x) in between.
SE7EN's Avatar

New kid on the Block

Joined: 9 Dec 2011
Posts: 5
9 Dec 2011 21:14:46 IST
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@pranava.. what if n
SE7EN's Avatar

New kid on the Block

Joined: 9 Dec 2011
Posts: 5
9 Dec 2011 21:17:00 IST
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* what if n>x
SE7EN's Avatar

New kid on the Block

Joined: 9 Dec 2011
Posts: 5
9 Dec 2011 21:17:55 IST
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sorry n
SE7EN's Avatar

New kid on the Block

Joined: 9 Dec 2011
Posts: 5
9 Dec 2011 21:18:33 IST
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n less than x

New kid on the Block

Joined: 30 Dec 2011
Posts: 4
30 Dec 2011 22:43:22 IST
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answer is zero.....


New kid on the Block

Joined: 30 Mar 2012
Posts: 3
30 Mar 2012 19:08:12 IST
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 may i know how zero ???


Blazing goIITian

Joined: 21 Mar 2012
Posts: 1355
30 Mar 2012 19:15:15 IST
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(x-n)!/X!


Blazing goIITian

Joined: 21 Mar 2012
Posts: 1355
30 Mar 2012 19:27:56 IST
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answer cant be zerrrrrrrrrrro since x is variable

New kid on the Block

Joined: 15 Apr 2012
Posts: 1
15 Apr 2012 16:54:31 IST
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 the answer is zero,,,,,, because ,since the question is ...........(x-1)(x-2)(x-3).........(x-n) and also they have given x belongs to N

 

now let x be 1 then the first term itself becomes zero ,, so the product of anything is zero




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