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1.
If 
and 
are square matrices of order 3 such that 
then 
equals
and are square matrices of order 3 such that then equals
2.
The rank of the matrix 
is
is
3.
If 
is equal to
is equal to
4.
If 
is a scalar matrix of order 
such that 
for all 
then 
is a scalar matrix of order such that for all then
5.
If A 
is such that |A|=O and 
then 
is equal to
is such that |A|=O and then is equal to