*C, "C. + "Cre! is equal to

20^@C is equals to

If a*b=b*c=c*a=0," then [abc] is equal to

If A and B are two non-singular matrices such that AB=C, then |B| is equal to (|C|)/(|A|) b.(|A|)/(|C|) c.|C| d.none of these

Ann(B-C) equals to

Ann(B-C) equals to

The value of [[a-b , b-c ,c-a]] is equal to