1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If P(n, r) = 2520 and C(n, r) = 21, then what is the value of C(n + 1, r + 1)?
2
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If C(20, n + 2) = C(20, n $$-$$2), then what is n equal to?
3
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
There are 10 points in a plane. No three of these points are in a straight line. What is the total number of straight lines which can be formed by joining the points?
4
NDA 2019 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
From 6 programmers and 4 typists, an office wants to recruit 5 people. What is the number of ways this can be done so as to recruit at least one typist?
Questions Asked from Permutations and Combinations (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Mathematics 13 April 2025 (6)
NDA Mathematics 1st September 2024 (7)
NDA Mathematics 21 April 2024 (7)
NDA Mathematics 3 September 2023 (3)
NDA Mathematics 16 April 2023 (7)
NDA Mathematics 4 September 2022 (6)
NDA Mathematics 10 April 2022 (7)
NDA Mathematics 14 November 2021 (7)
NDA Mathematics 18 April 2021 (3)
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