1
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$m = \left[ {\matrix{
1 & 0 \cr
0 & 1 \cr
} } \right]$$ and $$n = \left[ {\matrix{
0 & 1 \cr
{ - 1} & 0 \cr
} } \right]$$, then what is the value of the determinant of $$m\cos \theta $$ $$-$$ $$n\sin \theta $$ ?
2
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
If $$f(x) = \left[ {\matrix{
{\cos x} & { - \sin x} & 0 \cr
{\sin x} & {\cos x} & 0 \cr
0 & 0 & 1 \cr
} } \right]$$, then which of the following are correct?
I. $$f(\theta ) \times f(\phi ) = f(\theta + \phi )$$.
II. The value of the determinant of the matrix $$f(\theta ) \times f(\phi )$$ is 1.
III. The determinant of $$f(x)$$ is an even function.
Select the correct answer using the code given below.
I. $$f(\theta ) \times f(\phi ) = f(\theta + \phi )$$.
II. The value of the determinant of the matrix $$f(\theta ) \times f(\phi )$$ is 1.
III. The determinant of $$f(x)$$ is an even function.
Select the correct answer using the code given below.
3
NDA 2016 Paper 2
MCQ (Single Correct Answer)
+2.5
-0.83
Which of the following are correct in respect of the system of equations $$x + y + z = 8$$, $$x - y + 2z = 6$$ and $$3x - y + 5z = k$$ ?
I. They have no solution, if k = 15.
II. They have infinitely many solutions, if k = 20.
III. They have unique solution, if k = 25.
Select the correct answer using the code given below.
I. They have no solution, if k = 15.
II. They have infinitely many solutions, if k = 20.
III. They have unique solution, if k = 25.
Select the correct answer using the code given below.
4
NDA 2016 Paper 1
MCQ (Single Correct Answer)
+2.5
-0.83
Which of the following determinants have value 'zero'?
1. $$\left| {\matrix{ {41} & 1 & 5 \cr {79} & 7 & 9 \cr {29} & 5 & 3 \cr } } \right|$$
2. $$\left| {\matrix{ 1 & a & {b + c} \cr 1 & b & {c + a} \cr 1 & c & {a + b} \cr } } \right|$$
3. $$\left| {\matrix{ 0 & c & b \cr { - c} & 0 & a \cr { - b} & { - a} & 0 \cr } } \right|$$
Select the correct answer using the code given below.
1. $$\left| {\matrix{ {41} & 1 & 5 \cr {79} & 7 & 9 \cr {29} & 5 & 3 \cr } } \right|$$
2. $$\left| {\matrix{ 1 & a & {b + c} \cr 1 & b & {c + a} \cr 1 & c & {a + b} \cr } } \right|$$
3. $$\left| {\matrix{ 0 & c & b \cr { - c} & 0 & a \cr { - b} & { - a} & 0 \cr } } \right|$$
Select the correct answer using the code given below.
Questions Asked from Determinants (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