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If M and N are square matrices order 3, ...

If M and N are square matrices order 3, then which one of the following statements is not true?

A

For all symmetric matrices M and N, MN-NM is skew symmetric

B

MN MN is symmetric or skew symmetric according as M is symmetric or skew symmetric

C

For all symmetric matrices M and N, matrix MN is symmertic

D

For any two matrices M and N, adj (MN) and adj (NM) need not be equal

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The correct Answer is:
C
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