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A rectangle with sides 2m-1a n d2n-1 is ...

A rectangle with sides `2m-1a n d2n-1` is divided into squares of unit length by drawing parallel lines as shown in the diagram, then the number of rectangles possible with odd side lengths is fig a.`(m+n-1)^2` b. `4^(m+n-1)` c. `m^2n^2` d. `m(m+1)n(n+1)`

A

`m^(2)n^(2)`

B

`mn(m + 1)(n+1)`

C

`4(m+n)-1`

D

none of these

Text Solution

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The correct Answer is:
A
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