Aptitude topic alphabet series

Question

Consider the following series : A B C D .... X Y Z | Y X .... B A | B C D .... Y Z. | Y X .... C B A | B C .... YZ .... Which letter occupies the 1000th position in theabove series ? 

Comments

nitish
26 + (26*37) + 2
second character is C

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@Anu sir,

it will be 26 + (25*38) + 24

and last 24 lies in reverse series(i.e YXW......BA) and 24th element in last group is 'B'

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i am also getting B.