Q.

The number of rectangles that can be found on a chess board is

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a

8C2⋅ 8C2

b

64C4

c

9C2⋅ 9C2

d

8C2

answer is C.

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Detailed Solution

The number of rectangles that can be found on a chess board is =9C2⋅ 9C2
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The number of rectangles that can be found on a chess board is