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The number of rectangles which are no...

The number of rectangles which are not squares formed in a chess board is

A

`""^(8)C_(2)xx""^(8)C_2 -8^2`

B

`""^(8) C_(2) xx ""^(8)C_(2) - sum ^2`

C

`""^(9)C_2 xx ""^(9)C_(2) -8 ^(2)`

D

`""^(9)C_(2)xx ""^(9)C_(2)- sum 8^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
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DIPTI PUBLICATION ( AP EAMET)-PERMUTATIONS & COMBINATIONS-EXERCISE 1B (COMBINATIONS )
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  2. If one square choosed randomly from chess board. Th probability of get...

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  3. The number of rectangles which are not squares formed in a ches...

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  4. The number of ways of selecting two having common side in a ches...

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  5. From the two systems of lines x-h=0 , h=0,1,2,3,4,5 and y-k=0,1,2,3...

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  6. The number of ways of dividing 12 boys into 2 groups of 7,5 boys r...

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