1
NDA 2019 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
What is the number of diagonals of an octagon?
2
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)?
3
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?
4
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?
Questions Asked from Permutations and Combinations (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
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