1
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
The common roots of the equations $${z^3} + 2{z^2} + 2z + 1 = 0$$ and $${z^{2017}} + {z^{2018}} + 1 = 0$$ are
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Read the information carefully and answer the given questions.
A complex number is given by $$z = {{1 + 2i} \over {1 - {{(1 - i)}^2}}}$$.
A complex number is given by $$z = {{1 + 2i} \over {1 - {{(1 - i)}^2}}}$$.
What is the modulus of z?
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Read the information carefully and answer the given questions.
A complex number is given by $$z = {{1 + 2i} \over {1 - {{(1 - i)}^2}}}$$.
A complex number is given by $$z = {{1 + 2i} \over {1 - {{(1 - i)}^2}}}$$.
What is the principal argument of z?
4
NDA Mathematics 13 April 2025
MCQ (Single Correct Answer)
+2.5
-0.833
What is $ \left( \frac{\sqrt{3}+i}{\sqrt{3}-i} \right)^3 $ equal to?
Questions Asked from Complex Numbers (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Mathematics 13 April 2025 (2)
NDA Mathematics 1st September 2024 (4)
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NDA Mathematics 3 September 2023 (6)
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NDA Subjects
Mathematics
Algebra
Sets, Relations and Functions Logarithms Quadratic Equations and Inequalities Sequence And Series Binomial Theorem Matrices Determinants Permutations and Combinations Probability Complex Numbers Vector Algebra Three Dimensional Geometry Statistics
Trigonometry
Trigonometric Angles and Equations Inverse Trigonometric Function Height and Distance Properties of Triangles
Coordinate Geometry
Calculus
English
General Studies