Matrices

Bihar Board Class 12 · Mathematics · 84 past questions

14 of 84 · show all

1. Q24 2025 Set A2025 Set E2023

   $\begin{bmatrix}6 & 5\end{bmatrix}\begin{bmatrix}1\\-1\end{bmatrix} =$

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2. Q25 2025 Set A2025 Set E20232023 Set E

   $\begin{bmatrix}2 & 3\\5 & 7\end{bmatrix}\begin{bmatrix}2\\5\end{bmatrix} =$

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3. Q34 2025 Set E20232023 Set E

   $\begin{bmatrix}1 & 0\\0 & 1\end{bmatrix}\begin{bmatrix}2 & -3\\0 & 4\end{bmatrix} =$

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4. Q49 2023

   $[2a-7 \quad 1] = [a \quad b-1] \Rightarrow (a, b) =$

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5. Q50 2023

   $[-1][1\ \ {-1}] =$

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6. Q51 2023

   $3\begin{bmatrix} 7 & -2 \\ 8 & 0 \end{bmatrix} =$

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7. Q52 2023

   $\begin{bmatrix}13 & 15\\-1 & 4\end{bmatrix}\begin{bmatrix}2 & 0\\0 & 2\end{bmatrix} =$

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8. Q53 20232023 Set E

   The adjoint matrix of matrix $\begin{bmatrix} 1 & 2 \\ 3 & 4 \end{bmatrix}$

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9. Q54 2023 Set E

   If $A=\begin{bmatrix}1&0\\0&1\end{bmatrix}$ then the value of $A^{25}$ is

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10. Q55 2023 Set E

    $[-1]\,[1\;\;-1] =$

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11. Q56 2023 Set E

    $3\begin{bmatrix}7&-2\\8&0\end{bmatrix}=$

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12. Q57 2023 Set E

    $\begin{bmatrix}13&15\\-1&4\end{bmatrix}\begin{bmatrix}2&0\\0&2\end{bmatrix} =$

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13. Q58 2023 Set E

    $[2a-7 \;\; 1] = [a \;\; b-1] \Rightarrow (a,b) =$

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14. Q59 2023 Set E

    $[6 \;\; 5]\begin{bmatrix} 1 \\ -1 \end{bmatrix} =$

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