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Questions  >>  JEEMAIN and NEET  >>  Mathematics  >>  Class12  >>  Matrices
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Q)

If $A,B$ are two square matrices such that $AB=A$ and $BA=B$ then $A$ and $B$ are

$\begin{array}{1 1}(A)\;\text{nilpotent}&(B)\;\text{idempotent}\\(C)\;\text{periodic}&(D)\;\text{involutory}\end{array}$

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