आव्यूह \( \left[\begin{array}{rrr}1 & 2 & -3 \\ 0 & 1 & 2 \\ 0 & 0 & 1\end{array}\right] \) के प...

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आव्यूह \( \left[\begin{array}{rrr}1 & 2 & -3 \\ 0 & 1 & 2 \\ 0 & 0 & 1\end{array}\right] \) के प्रतिलोम का प्रथम पंक्ति तथा तीसरे स्तम्भ के अवयव का मान है
(A) \( -2 \)
(B) 0
(C) 1
(D) 7
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