1
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which one of the following matrices is an elementary matrix?
2
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$A = \left[ {\matrix{
2 & 7 \cr
1 & 5 \cr
} } \right]$$, then what is $$A + 3{A^{ - 1}}$$ equal to?
where, I is the identity matrix of order 2.
where, I is the identity matrix of order 2.
3
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
The matrix $$\left[ {\matrix{
0 & { - 4 + i} \cr
{4 + i} & 0 \cr
} } \right]$$ is
4
NDA 2015 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$X = \left[ {\matrix{
3 & { - 4} \cr
1 & { - 1} \cr
} } \right]$$, $$B = \left[ {\matrix{
5 & 2 \cr
{ - 2} & 1 \cr
} } \right]$$ and $$A = \left[ {\matrix{
p & q \cr
r & s \cr
} } \right]$$ satisfy the equation AX = B, then the matrix A is equal to
Questions Asked from Matrices (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