Matrices

Bihar Board Class 12 · Mathematics · 84 past questions

14 of 84 · show all

1. Q5 2026 Set A2026 Set H2026 Set E2026 Set C2026 Set F2026 Set D2026 Set J2026 Set B2024 Set J2024 Set D

   $A = [\,a_{ij}\,]_{m\times n}$ is a square matrix if

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2. Q36 2024 Set D2024 Set J

   If $A=\begin{bmatrix}2&-3\\4&6\end{bmatrix}$ then $A^{-1}=$

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3. Q37 2024 Set D2024 Set J

   If $A=\begin{bmatrix}3&6\\-5&4\end{bmatrix}$ and $B=\begin{bmatrix}7&8\\5&6\end{bmatrix}$ then $6A-5B=$

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4. Q38 2024 Set D

   If $A=\begin{bmatrix}2&\sqrt2&0\\3&-2&\frac25\end{bmatrix}$ then $A'=$

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5. Q39 2024 Set D2024 Set J

   If $2A+B+X=0$, where $A=\begin{bmatrix}-1&2\\3&4\end{bmatrix}$ and $B=\begin{bmatrix}3&-2\\1&5\end{bmatrix}$…

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6. Q40 2024 Set D

   $5\begin{bmatrix}5&6\\7&8\end{bmatrix}=$

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7. Q41 2024 Set D

   $\begin{bmatrix}-3\\5\\2\end{bmatrix}\begin{bmatrix}1&6&-4\end{bmatrix}=$

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8. Q42 2024 Set D

   $A=\begin{bmatrix}0&1\\1&0\end{bmatrix}\Rightarrow A^5=$

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9. Q43 2024 Set D2024 Set J

   $[x\ \ y]=[2x-1\ \ \ 9]\Rightarrow$

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10. Q44 2024 Set J

    $5\begin{bmatrix} 5 & 6 \\ 7 & 8 \end{bmatrix} =$

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11. Q45 2024 Set J

    $\begin{bmatrix} -3 \\ 5 \\ 2 \end{bmatrix} \begin{bmatrix} 1 & 6 & -4 \end{bmatrix} =$

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12. Q46 2024 Set J

    $A = \begin{bmatrix} 0 & 1 \\ 1 & 0 \end{bmatrix} \Rightarrow A^5 =$

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13. Q47 2024 Set J

    If $A = \begin{bmatrix} 3 & -5 \\ -1 & 2 \end{bmatrix}$ then adjoint $A =$

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14. Q48 2024 Set J

    If $A=\begin{bmatrix}2&\sqrt{2}&0\\3&-2&\frac{2}{5}\end{bmatrix}$ then $A'=$

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