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v If A is any square matrix then adjA =
(a) Transpose of matrix of cofactors
(b) Matrix of cofactors
(c) Transpose of matrix A.
(d) None of these
v For a skew symmetric matrix A = [aij] diagonal elements must be
(a) 0
(b) 1
(c) 2
(d) None of these
v If A is a matrix of order 4×2 then order of AtA =
(a) 4×4
(b) 2×2
(c) 4×2
(d) none of these
v If the entries of one row or column in a square matrix A are multiplied by K then the determinant of the resulting matrix is
(a) ÷A÷
(b) 1/k÷A÷
(c) – k ÷A÷
(d) None of these
v A system of linear equation is said to be consistent if it has
(a) No solution
(b) Unique solution
(c) Infinite solution
(d) (b), (c)
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