How many rectangles can be formed out of a chess board ?  Choose the correct choice from the following choices.
A) 204  B) 1230  C) 1740  D) 1296  E) none of these
A chess board consists 9 parallel lines x 9 parallel lines.   For a rectangle we need to select 2 parallel lines and the other two parallel lines that are perpendicular to the first set.   Hence, 9C2 x 9C2 = 1296 rectangles   ANSWER:1296
<result>D</result>
How many rectangles can be formed out of a chess board ?