Answer: Product of diagonal elements.
- A Sum of all elements
- B Sum of diagonal elements
- C Product of all elements
- D Product of diagonal elements
Correct answer: D. Product of diagonal elements
Explanation: For any triangular (upper or lower) matrix, the determinant is the product of all elements on the main diagonal.
Concept context
Evaluation of determinants, cofactors, adjoint, inverse of matrix, Cramer's rule and area applications. Always in board and JEE.