Question

Which of the following statements is correct about a null matrix?

• A. It has more than one entries as zero
• B. It has only one non-zero entry
• C. It has all the entries as zero
• D. It is represented as O_mxn where mxn is the order of the matrix

Answer 1

Answer: (C), (D)

The correct options are
C

It has all the entries as zero

D

It is represented as O_mxn where mxn is the order of the matrix

We know that null matrix has all entries as zero. Not even a single entry should be non zero to call it a null matrix. So option C is correct. Also its representation is $O_{mxn}$. So option d is correct.