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in a 7*11 chessboard find the probability that a rectangle picked up has odd area ??

in a 7*11 chessboard find the probability that a rectangle picked up has odd area ??

Grade:12

1 Answers

Saurabh Koranglekar
askIITians Faculty 10341 Points
one year ago
Dear student

The area can be odd number when both length and breadth are odd number

ie out of {1,2,3,4,5,6,7} and {1,2,3,4,5,6,7,8,9,10,11}

possible combinations are
{1,3,5,7} and {1,3,5,7,9,11}

ie ((4*6)/ (7*11))

Regards

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