Mathematics MCQs for PPSC FPSC KKPSC BPSC SPSC NTS Test 13

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Note:-

There will be 25 multiple choice question in the test.
Answer of the questions will change randomly each time you start this test.
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Test Instructions:-
Test Name Lecturer Mathematics
Subject Math Test 13
Test Type MCQs Mathematics
Total Questions 25
Total Time 20 Minutes
Total Marks 100
0%

You have 20 minutes to pass to the quiz.


Lecturer Mathematics Online Test No. 13

1 / 25

In echelon form of matrix, the first non zero entry is called:

2 / 25

For any matrix A , it is always true that:

a). ? = ??

b). – ? = ?̅

c). |?| = |??|

d). ?−1 = 1/A

 

3 / 25

The value of ? for which the system ? + ?? = ?; ?? + ?? = −? does not possess the unique solution

4 / 25

Which of the following Sets is a field:

5 / 25

If the system of linear equations have no solution at all, then it is called a/an:

6 / 25

A square matrix ? = [???] for which ??? = ?, ? > ? then A is called:

7 / 25

Which of the following Sets is not a field:

8 / 25

To convert ???? + ??? + ? = ?(? ≠ ?) into quadratic form , the correct substitution is:

A). ? = ??

B). ? = ??

C). ? = ?−?

D). ? = 1/?

9 / 25

The main diagonal elements of a skew hermitian matrix must be:

10 / 25

(?−?)? =

11 / 25

In a homogeneous system of linear equations , the solution (0,0,0) is:

12 / 25

 The solution of a quadratic equation are called:

13 / 25

If ?? = ? then ? =

14 / 25

For a non-singular matrix it is true that :

A). (?−1)−1 = ?

B). (??)? = ?

C). ?̿ = ?

D). all of these

15 / 25

If all entries of a square matrix of order ? is multiplied by ?, then value of |??| is equal to:

A). ?|?|

B). ?2|?|

C). ?3|?|

D). |?|

 

16 / 25

The equation ??? + ?? + ? = ? will be quadratic if:

17 / 25

To convert ??+? + ??−? = ?? into quadratic , the substitution is:

A). ? = ?1−?

B). ? = 41+?

C). ? = 4?

D). ? = 4−?

18 / 25

 The equation in which variable occurs in exponent , called:

19 / 25

Solution set of the equation ?? − ?? + ? = ? is:

20 / 25

 If a square matrix ? has two identical rows or two identical columns then:

21 / 25

A square matrix ? = [???] for which ??? = ?, ? < ? then A is called:

22 / 25

For any non-singular matrices A and B it is true that:

A). (??)−1 = ?−1?−1

B). (??)? = ????

C). ?? ≠ ??

D). all of these

23 / 25

If a matrix is in triangular form, then its determinant is product of the entries of its:

24 / 25

 If A is symmetric (Skew symmetric), then ?? must be

25 / 25

How many techniques to solve quadratic equations:

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