MCQ
यदि $\left|\begin{array}{ll}a_1 & b_1 \\ c_1 & d_1\end{array}\right|=10$, तो $\left|\begin{array}{cc}2 a_1 & 2 b_1 \\ 3 c_1 & 3 d_1\end{array}\right|$ का मान है-
- A50
- ✓60
- C40
- D30
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