MCQ
यदि $\left|\begin{array}{ll}2 & 4 \\ 5 & 1\end{array}\right|=\left|\begin{array}{cc}2 x & 4 \\ 6 & x\end{array}\right|$ हो, तो बराबर है
- A$\pm \sqrt{2}$
- B$\pm \sqrt{5}$
- C$\pm 7$
- ✓$\pm \sqrt{3}$
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