Matrices

Bihar Board Class 12 · Mathematics · 84 past questions

5 of 84 · show all

1. Q17 2025

   If $A$ and $B$ are invertible matrices of same order then $(AB)^{-1} =$

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2. Q20 2025

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

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3. Q22 2025

   Find the inverse matrix of the matrix $A = \begin{bmatrix}3 & 2\\5 & -1\end{bmatrix}$.

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4. Q33 2025 Set A

   The adjoint of the matrix $\begin{bmatrix}2&3\\5&4\end{bmatrix}$ is

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5. Q35 2025 Set E

   Adjoint matrix of matrix $\begin{bmatrix}2 & 3\\5 & 4\end{bmatrix}=$

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