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JEEMAIN and NEET
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Mathematics
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Class12
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Determinants
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Q)
If a square matrix A is such that $AA^T=I=A^TA$ then $|A|$ is equal to
$\begin{array}{1 1}(A)\;0&(B)\;\pm 1\\(C)\;\pm 2&(D)\;\text{None of these}\end{array}$
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