PU CSS 2026 Matrices and Determinants Free Quiz 2

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PU CSS 2026 Matrices and Determinants Free Quiz 2

PU CSS Quiz

10:00

Answered: 0 / 10

Remaining: 10

Navigator 10 Q

General

General 10 MCQs

11. What is det([[1,2],[3,4]])?

A. 2 B. -2 C. 10 D. -1

12. What does det(A) ≠ 0 imply?

A. Singular B. Not invertible C. Symmetric D. Non-singular (invertible)

13. What is the determinant of a triangular matrix?

A. Product of diagonal elements B. Sum of diagonal elements C. Difference of diagonal elements D. Average of diagonal elements

14. What is det(kA) for an n×n matrix?

A. k det(A) B. kⁿ det(A) C. k² det(A) D. det(A)

15. What is det(AB)?

A. det(A) + det(B) B. det(A) - det(B) C. det(A) × det(B) D. det(A)/det(B)

16. What is det(Aᵀ)?

A. -det(A) B. 0 C. 1/det(A) D. det(A)

17. What is the inverse of [[a,b],[c,d]]?

A. (1/(ad-bc)) [[d, -b], [-c, a]] B. [[a, c], [b, d]] C. [[d, c], [b, a]] D. [[a, -b], [-c, d]]

18. What is AA⁻¹?

A. AA⁻¹ = 0 B. AA⁻¹ = A C. AA⁻¹ = I D. AA⁻¹ = A⁻¹

19. What is the inverse of [[1,2],[3,4]]?

A. [[2, -1], [-3/2, 1/2]] B. [[-2, -1], [3/2, 1/2]] C. [[2, 1], [3/2, -1/2]] D. [[-2, 1], [3/2, -1/2]]

20. What is (A⁻¹)⁻¹?

A. A B. A⁻¹ C. I D. 0

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⚡ Test Pattern (Total: 100 MCQs):

English: 20 MCQs
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Physics: 20 MCQs
Quantitative Reasoning: 20 MCQs

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