1
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
$$A = \left[ {\matrix{
{x + y} & y \cr
x & {x - y} \cr
} } \right]$$, $$B = \left[ {\matrix{
3 \cr
{ - 2} \cr
} } \right]$$ and $$C = \left[ {\matrix{
4 \cr
{ - 2} \cr
} } \right]$$. If AB = C, then what is A2 equal to?
2
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Consider the set A of all matrices of order 3 $$\times$$ 3 with entries 0 or 1 only. Let B be the subset of A consisting of all matrices whose determinant is 1. Let C be the subset of A consisting of all matrices whose determinant is $$-$$1. Then which one of the following is correct?
3
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
If $$A = \left[ {\matrix{
{\cos \theta } & {\sin \theta } \cr
{ - \sin \theta } & {\cos \theta } \cr
} } \right]$$, then what is A3 equal to?
4
NDA 2017 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
What is the order of $$\left[ {\matrix{
x & y & z \cr
} } \right]\left[ {\matrix{
a & h & g \cr
h & b & f \cr
g & f & c \cr
} } \right]\left[ {\matrix{
x \cr
y \cr
z \cr
} } \right]$$ ?
Questions Asked from Matrices (Marks 2.5)
Number in Brackets after Paper Indicates No. of Questions
NDA Subjects
Mathematics
Algebra
Sets, Relations and FunctionsLogarithmsQuadratic Equations and InequalitiesSequence And SeriesBinomial TheoremMatricesDeterminantsPermutations and CombinationsProbabilityComplex NumbersVector AlgebraThree Dimensional GeometryStatistics
Trigonometry
Trigonometric Angles and EquationsInverse Trigonometric FunctionHeight and DistanceProperties of Triangles
Coordinate Geometry
Calculus
English
General Studies