Determinants

Bihar Board Class 12 · Mathematics · 70 past questions

5 of 70 · show all

1. Q16 2025

   If $\begin{vmatrix} 2 & x \\ x & 8 \end{vmatrix} = \begin{vmatrix} 10 & 7 \\ 30 & 21 \end{vmatrix}$, then…

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2. Q19 2025

   If $\begin{vmatrix} x+1 & 3 \\ 5 & x-1 \end{vmatrix} = 0$ then $x =$

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3. Q20 2025

   Solve: $\begin{vmatrix}x^2-x+1 & x-1\\x+1 & x+1\end{vmatrix} = 2$

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4. Q25 2025 Set A2025 Set E

   $\begin{vmatrix}x&15\\4&4\end{vmatrix}=0\ \Rightarrow x=$

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5. Q30 2025 Set E

   If $\begin{vmatrix} x & 5 \\ x & x \end{vmatrix}=24$, then find the value of $x$.

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