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Question

If for a square matrix A(non-singular) and B, null matrix O, AB = O then?

a.

B is a null matrix

b.

B is a non singular matrix

c.

B is a identity matrix

d.

All of the mentioned

Answer: (a).B is a null matrix

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Q. If for a square matrix A(non-singular) and B, null matrix O, AB = O then?