Mathematics General Science Test Medium Mode

Sr. #	Questions	Answers Choice
1	The square matrix A is skew-symmetric when At =	-B -C -A -D
2	A square matrix A = [aij] is upper triangular when	cij = 0 bij = 0 aij = 0 for all i > j dij = 0
3	A square matrix A = [aij] is lower triangular matrix when	aij = 0 for all i<j bij = 0 cij = 0 dij = 0
4	Cofactor of an element aij denoted by Aij is	(-2)i+j Mij (-1)i+j Mij None of above
5	Matrices A = [aij] 2 x 3 and B = [bij] 3 x 2 are suitable for	BA A2 AB B2

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