PERMUTATIONS AND COMBINATIONS !!!

There is a 7 * 11 chessboard placed in front of you. what you have to do is to find the number of rectangles of all shapes and sizes but of odd dimensions(i.e. both the length and breadth have to be odd) !!!
......check out!!!

12 Answers

3
msp ·

\sum{(2m-1)(2j-1)}

m for rows and j for columns

62
Lokesh Verma ·

no one has done this one?

19
Debotosh.. ·

i have ;) ;)

62
Lokesh Verma ·

arrrey you have.. but the other guys... [2]

1
Unicorn--- Extinct!! ·

Any hint??

62
Lokesh Verma ·

think of the number of rectangles of base lenght 1 or 3 or 5...

1
Bicchuram Aveek ·

Is the answer 148 ??

62
Lokesh Verma ·

i think 360

39
Dr.House ·

:O

360 at one go??

62
Lokesh Verma ·

oh sorry i made a small mistake

(7+5+3+1)(11+9+7+5+3+1)

= 16x36

736

39
Dr.House ·

ya rite

by the way

-when spring comes, it melts the snow one flake at a time…

so please do it bit slowly and step by step whenever u try :P

62
Lokesh Verma ·

:P

that is what i am trying to learn but never did :D

Your Answer

Close [X]