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If A("mxn") is a matrix and I and I' are...

If `A_("mxn")` is a matrix and I and I' are unit matrices such that I'AI is defined, then which of the following is true ?

A

`t_(r)(I+l')=m+n`

B

`t_(r)(Il')=m`

C

`t_(r)(l)+t_(r)(l')=m+n`

D

None of these.

Text Solution

Verified by Experts

The correct Answer is:
C
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