Matrices & Determinants
181 NDA Mathematics previous year questions (PYQs) from 19 papers, 2017 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 41 easy · 86 moderate · 54 hard.
- Most-asked subtopics: Determinant Properties, Operations, and Sums (61), Matrix Operations, Polynomials, and Equations (34), Cofactors, Adjoint, and Inverse (33).
- Updated 14 September 2026.
- NDA · Sep 2026 · Q19Moderate
#1Matrix Operations, Polynomials, and Equations
- NDA · Apr 2017 · Q32Moderate
#2Matrix Operations, Polynomials, and Equations
#3Matrix Operations, Polynomials, and Equations
#4Matrix Operations, Polynomials, and Equations
#5Matrix Operations, Polynomials, and Equations
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#6Matrix Operations, Polynomials, and Equations
#7Matrix Operations, Polynomials, and Equations
- NDA · Sep 2017 · Q11Moderate
#8Matrix Operations, Polynomials, and Equations
#9Matrix Operations, Polynomials, and Equations
#10Matrix Operations, Polynomials, and Equations
- NDA · Apr 2018 · Q26Moderate
#11Matrix Operations, Polynomials, and Equations
- NDA · Sep 2018 · Q28Moderate
#12Matrix Operations, Polynomials, and Equations
- NDA · Sep 2018 · Q35Moderate
#13Matrix Operations, Polynomials, and Equations
- NDA · Sep 2019 · Q14Moderate
#14Matrix Operations, Polynomials, and Equations
#15Matrix Operations, Polynomials, and Equations
- NDA · Apr 2020 · Q9Moderate
#16Matrix Operations, Polynomials, and Equations
#17Matrix Operations, Polynomials, and Equations
#18Matrix Operations, Polynomials, and Equations
#19Matrix Operations, Polynomials, and Equations
- NDA · Apr 2021 · Q12Moderate
#20Matrix Operations, Polynomials, and Equations
- NDA · Sep 2021 · Q11Moderate
#21Matrix Operations, Polynomials, and Equations
#22Matrix Operations, Polynomials, and Equations
#23Matrix Operations, Polynomials, and Equations
#24Matrix Operations, Polynomials, and Equations
- NDA · Apr 2022 · Q8Moderate
#25Matrix Operations, Polynomials, and Equations
#26Matrix Operations, Polynomials, and Equations
- NDA · Sep 2022 · Q7Moderate
#27Matrix Operations, Polynomials, and Equations
- NDA · Apr 2023 · Q7Moderate
#28Matrix Operations, Polynomials, and Equations
#29Matrix Operations, Polynomials, and Equations
- NDA · Apr 2024 · Q21Moderate
#30Matrix Operations, Polynomials, and Equations
- NDA · Sep 2024 · Q1Moderate
#31Matrix Operations, Polynomials, and Equations
- NDA · Sep 2024 · Q5Moderate
#32Matrix Operations, Polynomials, and Equations
- NDA · Apr 2025 · Q23Moderate
#33Matrix Operations, Polynomials, and Equations
- NDA · Apr 2025 · Q27Moderate
#34Matrix Operations, Polynomials, and Equations
- NDA · Sep 2026 · Q18Moderate
#35Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Sep 2026 · Q21Moderate
#36Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
#37Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
#38Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
#39Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Apr 2020 · Q1Moderate
#40Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Sep 2021 · Q50Moderate
#41Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- Set · 2 questionsConsider the following for the next three (03) items that follow: Let and where P is symmetric matrix and Q is skew-symmetric matrix.
- NDA · Sep 2022 · Q37Moderate
#42Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Sep 2022 · Q38Moderate
#43Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Apr 2023 · Q6Moderate
#44Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Apr 2026 · Q18Moderate
#45Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- Set · 2 questionsFor the following two (02) items: Let .
#46Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Sep 2025 · Q40Moderate
#47Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
- NDA · Sep 2023 · Q8Moderate
#48Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
#49Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
#50Special Matrices — Skew-Symmetric, Diagonal, Idempotent, Orthogonal, Rotation
Showing the first 50 of 181.
See all 181 questionsMore chapters in this subject
- 3D Geometry94
- Application of Derivatives76
- Applications of Integration27
- Binomial Distribution31
- Binomial Theorem56
- Circles28
- Complex Numbers76
- Conics40
- Definite Integration69
- Differential Equations67
- Differentiation89
- Functions115
- Height & Distance26
- Indefinite Integration42
- Inverse Trigonometry36
- Limits & Continuity87
- Lines104
- Logarithms27
- Permutation & Combination80
- Probability176
- Properties of Triangle52
- Quadratic Equations67
- Sequence & Series93
- Sets & Relations75
- Statistics165
- Trigonometric Equations34
- Trigonometric Identities145
- Vectors102