Permutations And Combinations Question 204
Question: There is a rectangular sheet of dimension $ (2m-1) $ × $ (2n-1) $ , (where $ m>0,n>0) $ . It has been divided into square of unit area by drawing lines perpendicular to the sides. Find number of rectangles having sides of odd unit length [IIT Screening 2005]
Options:
A) $ {{(m+n+1)}^{2}} $
B) $ mn(m+1)(n+1) $
C) $ {4^{m+n-2}} $
D) $ m^{2}n^{2} $
Correct Answer: D
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Answer:
Solution:
BETA
