Determinants

CBSE Class 12 · Mathematics · 30 past questions

5 of 30 · show all

1. Q4 2026

   For a square matrix A, (3A)$^{-1}$ =

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2. Q9 2025

   If $A = \begin{bmatrix} -1 & 0 & 0 \\ 0 & 1 & 0 \\ 0 & 0 & 1 \end{bmatrix}$, then $A^{-1}$ is

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3. Q19 2024

   If $A = \begin{bmatrix} 2 & 0 & 0 \\ 0 & 3 & 0 \\ 0 & 0 & 5 \end{bmatrix}$, then $A^{-1}$ is…

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4. Q25 2023

   If $|A| = 2$, where A is a $2 \times 2$ matrix, then $|4A^{-1}|$ equals…

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5. Q26 2023

   Let A be a $3 \times 3$ matrix such that $|\text{adj } A| = 64$. Then $|A|$ is equal to…

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