1.

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

Answer»

For all symmetric matrices M and N, MN-NM is skew symmetric
MN MN is symmetric or skew symmetric according as M is symmetric or skew symmetric
For all symmetric matrices M and N, matrix MN is symmertic
For any TWO matrices M and N, ADJ (MN) and adj (NM) NEED not be equal

Answer :C


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