87
Matrix multiplication is commutative.
A
TRUE
B
FALSE
88
A square matrix where every element is unity is called an identity matrix.
A
TRUE
B
FALSE
89
If $A$ and $B$ are two square matrices of the same order, then $A+B=B+A$.
A
TRUE
B
FALSE
90
If $A$ and $B$ are two matrices of the same order, then $A-B=B-A$.
A
TRUE
B
FALSE
91
If matrix $A B=0$, then $A=0$ or $B=0$ or both $A$ and $B$ are null matrices.
A
TRUE
B
FALSE