Q .     If matrix `A= | (1,0,-1), (3,4,5) ,(0,6,7) | ` and its inverse is

denoted by `A^(-1) = | (a_11 , a_12, a_13),(a_21, a_22, a_23),(a_31, a_32, a_33) |` then the

value of `a_23` is

UPSEE 2012
A

`21/20`

B

`1/5`

C

`-2/5`

D

`2/5`

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