Determinants · Class 12 · CBSE · Science Mathematics
If a square matrix has two identical rows, then its determinant is:
Practice question from Determinants (Class 12 · CBSE · Science Mathematics), with the correct answer and a step-by-step solution.
easy · MCQ · Q-4CD5AE
If a square matrix has two identical rows, then its determinant is:
- A.1
- B.-1
- C.0Correct answer
- D.Cannot be determined
Solution
A determinant becomes zero when any two of its rows or columns are identical. Hence, the correct option is C.
More from Determinants
- Evaluate the determinant |2 3; 1 4|.
- If |a b; c d| = 7, then what is the value of |c d; a b|?
- Let A = [2 1; 5 3]. Which of the following is A⁻¹?
- Using Cramer's rule, solve the system 2x + 3y = 13 and 4x − y = 5.
Practise more Mathematics
Sign up free for adaptive practice on this chapter, with instant feedback and hints on every question.
Start practising freeFree to start · No credit card needed