Official PYQ · 2026Set 1 · Q16Linear AlgebraMSQ1 mark

GATE EC 2026 Set 1 Q16 — Linear Algebra

Consider the matrix $\mathrm{M}=\left[\begin{array}{ccc}2 & 1 & 1 \\ 1 & 3 & 0 \\ -1 & a & b\end{array}\right]$ .

Which of the following options is/ are TRUE if $\operatorname{det}(\mathrm{M}) \neq 0 ?$

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Answer: B;D

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Published 10 Oct 2026

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