Q.

If Ar=rr−1r−1r where r is a natural number then A1+A2+A3+…........+A2008 must be equal to

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By Expert Faculty of Sri Chaitanya

2008

(2006)2

(2006)3

2007

answer is 1.

(Detailed Solution Below)

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Detailed Solution

Ar=r2−(r−1)2=2r−1∑r=12008Ar=(2008)2

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