If A= [ array ccc 1 & -3 & 2 2 & k & 5 4 & 2 & 1 array ] is a singular matrix, then k is…
Mathematics · JEE Main · NTA Exams — Matrices and Determinants
\[\text { If } A=\left[\begin{array}{ccc}
1 & -3 & 2 \\
2 & k & 5 \\
4 & 2 & 1
\end{array}\right]\] is a singular matrix, then k is equal to
- –1
- 8
- 4
- –8
Answer
(D) –8
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