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Questions  >>  CBSE XII  >>  Math  >>  Matrices
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Q)

If A and B are two matrices of the order $3\times m\;and\;3\times n,$respectively,and m=n,then the order of matrix(5A-2B) is

\[(A)\quad m\times 3\quad(B)\quad 3\times 3\quad (C)\quad m \times n\quad (D)\quad 3\times n\]

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