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Mathematics | Determinants

Application of Determinants Evaluation of Determinants
If A is a square matrix, then the value of adj AT – (adj A)T is equal to
The value of (cos θ + i sin θ)(cos θ - i sin θ) = ?
If each element in a row of a determinant is multiplied by the same factor r, then the value of the determinant:
The determinant of an odd order skew symmetric matrix is always:
A be a square matrix of order 4 × 4 , then what is the value of  |3A| . 
A is a square matrix of order 3 such that its determinate is 4. What is the determinant of its transpose?
Let matrix B be the adjoint of a square matrix A, l be the identify matrix of same order as A. If k (≠ 0) is the determinate of the matrix A, then what is AB equal to? 
What is the value of \(\left| {\begin{array}{*{20}{c}} {{b^2} + {c^2}}&{ab}&{ac}\\ {ba}&{{c^2} + {a^2}}&{bc}\\ {ca}&{cb}&{{a^2} + {b^2}} \end{array}} \right|\)
Let A = [aij] and B = [bij] be two square matrices of order n and det(A) denote the determinant of A. Then, which of the following is not correct:
Let A, B, C, D be 3 x 3 matrices each with non-zero determinant and ABCD = I, where I is the identity matrix then C-1 is equal to ?
How many matrices of different orders are possible with elements comprising all prime numbers less than 30?
If A is a 2 × 2 matrix and |A| = 5, what is |5A| ? (| | denotes determinant)
If A is an invertible matrix, then what is det (A-1) equal to?
Let A and B be matrices of order 3 × 3. If |AB| = 0, then which of the following can be concluded?
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