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Matrices And Determinants

WB JEE 2026

MCQ+1 / -0.252026

মনে করো, $\operatorname{det} A=\left|\begin{array}{lll}l & m & n \\ p & q & r \\ 1 & 1 & 1\end{array}\right|$ ।


যদি $(l-m)^2+(p-q)^2=9,(m-n)^2+(q-r)^2=16,(n-l)^2+(r-p)^2=25$ হয়, তবে $(\operatorname{det} A)^2$-এর মান হয়


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