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The element in the first row and third c...

The element in the first row and third column of the inverse of the matrix `[(1,2,-3),(0,1,2),(0,0,1)]` is

A

(a) `-2`

B

(b) `0`

C

(c) `1`

D

(d) `7`

Text Solution

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The correct Answer is:
d
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