Mathematics Notes for 9th Class Exercise 15.1

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Mathematics Notes for 9th Class Exercise 15.1

“Math” a compulsory subject for 9th class Science students. and Mathematics Notes for 9th Class Exercise 15.1 or Math Notes Class 9 English Medium (Science Group) included in this book.

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Math Ch#15, 9th Class

Here MCQs for your Revision

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Welcome

You Should Enter your Name

1 / 19

Which of the following are the sides of a right angle triangles?

2 / 19

Angle for the minimum distance of a point “p” from the line segment AB will be _____

3 / 19

Similar means that their corresponding angles are congruent and corresponding sides are___

4 / 19

If a, b and c are the sides of obtuse angle triangle, then the value of hypotenuse c is ____

5 / 19

Which of the following are the sides of a right angle triangles?

6 / 19

If the square of one side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a ____ triangle.

7 / 19

Two sides of a triangle measure 12cm and 16cm, which of the following measure is possible for the third side.

8 / 19

If two sides of a triangle are unequal in length, the angle of the longer side opposite to it is of means____

9 / 19

Which one of the following sets form a triangle?

10 / 19

How many obtuse angles in a triangle?

11 / 19

A line segment has how many mid points?

12 / 19

In a scalene triangle, the angle opposite to the largest side of measure ___

13 / 19

If an isosceles right angles triangle, angle other than right angle is each of ______

14 / 19

If ΔABC and ΔDEF are two similar triangles, then symbolically they are written as _____

15 / 19

If 3cm and 4cm are two sides of a right angled triangle, then hypotenuse is _____

16 / 19

Point of intersection of the median of a triangle divides then ratio __________

17 / 19

If adjacent angles of two intersecting lines are congruent then lines are _____

18 / 19

Ratio between two elements “a and b” is represented as ______

19 / 19

If one acute angled triangle is 25°, the other acute angle is _______

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Math Solution 9th Class (Science Group)

Exercise 1.1           (English)            (Urdu)


Exercise 1.2           (English)            (Urdu)


Exercise 1.3           (English)            (Urdu)


Exercise 1.4           (English)            (Urdu)


Exercise 1.5           (English)            (Urdu)


Exercise 1.6           (English)            (Urdu)


Exercise 1-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 2.1           (English)            (Urdu)


Exercise 2.2           (English)            (Urdu)


Exercise 2.3           (English)            (Urdu)


Exercise 2.4           (English)            (Urdu)


Exercise 2.5           (English)            (Urdu)


Exercise 2.6           (English)            (Urdu)


Exercise 2-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 3.1           (English)            (Urdu)


Exercise 3.2           (English)            (Urdu)


Exercise 3.3           (English)            (Urdu)


Exercise 3.4           (English)            (Urdu)


Exercise 3-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 4.1           (English)            (Urdu)


Exercise 4.2           (English)            (Urdu)


Exercise 4.3           (English)            (Urdu)


Exercise 4.4           (English)            (Urdu)


Exercise 4-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 5.1           (English)            (Urdu)


Exercise 5.2           (English)            (Urdu)


Exercise 5.3           (English)            (Urdu)


Exercise 5.4           (English)            (Urdu)


Exercise 5-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 6.1           (English)            (Urdu)


Exercise 6.2           (English)            (Urdu)


Exercise 6.3           (English)            (Urdu)


Exercise 6-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 7.1           (English)            (Urdu)


Exercise 7.2           (English)            (Urdu)


Exercise 7.3           (English)            (Urdu)


Exercise 7-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 8.1           (English)            (Urdu)


Exercise 8.2           (English)            (Urdu)


Exercise 8.3           (English)            (Urdu)


Exercise 8-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 9.1           (English)            (Urdu)


Exercise 9.2           (English)            (Urdu)


Exercise 9.3           (English)            (Urdu)


Exercise 9-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 10.1           (English)            (Urdu)


Exercise 10.2           (English)            (Urdu)


Exercise 10.3           (English)            (Urdu)


Exercise 10.4           (English)            (Urdu)


Exercise 10-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 11.1           (English)            (Urdu)


Exercise 11.2           (English)            (Urdu)


Exercise 11.3           (English)            (Urdu)


Exercise 11.4           (English)            (Urdu)


Exercise 11.5           (English)            (Urdu)


Exercise 11-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 12.1           (English)            (Urdu)


Exercise 12.2           (English)            (Urdu)


Exercise 12.3           (English)            (Urdu)


Exercise 12-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 13.1           (English)            (Urdu)


Exercise 13.2           (English)            (Urdu)


Exercise 13-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 14.1           (English)            (Urdu)


Exercise 14.2           (English)            (Urdu)


Exercise 14-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 15           (English)            (Urdu)


Exercise 15-Rev   (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 16.1           (English)            (Urdu)


Exercise 16.2           (English)            (Urdu)


Exercise 16-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 17.1           (English)            (Urdu)


Exercise 17.2           (English)            (Urdu)


Exercise 17.3           (English)            (Urdu)


Exercise 17.4           (English)            (Urdu)


Exercise 17.5           (English)            (Urdu)


Exercise 17-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions


9th Math Science Group (English Medium)


9th Math Science Group (Urdu Medium)


9th Math Arts Group (Urdu Medium)



Mathematics Notes for 9th Chapter # 15:

Math Notes Class 9:

9th class math notes chapter 15, 9th class math solution chapter 15 pdf, math notes class 9 chapter 15, Math Notes Class 9 Exercise 15.1, exercise 15.1 class 9, Mathematics Notes for 9th Class Exercise 15.1 then this post is specially for you and your future. 

9th Class Math MCQs Chapter-15

Pythagoras Theorem:

If you are searching the topic “9th Class Math Solution” & “9th Class Math MCQs Chapter-15” for matric classes then, you are on the right place, because we are providing the Quality material for education of Students and their problems.

Class 9 Math MCQs Chapter-15:

MCQs from Text Book Exercise and others included in this Practice panel. By practicing again and again, Student can get good practice on this topic “Ratio and Proportion” i.e. 9th Class Math MCQs Chapter-15.

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Math Ch#15, 9th Class

Here MCQs for your Revision

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Good Luck. . . .  (:

Welcome

You Should Enter your Name

1 / 19

Similar means that their corresponding angles are congruent and corresponding sides are___

2 / 19

Ratio between two elements “a and b” is represented as ______

3 / 19

Two sides of a triangle measure 12cm and 16cm, which of the following measure is possible for the third side.

4 / 19

If the square of one side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a ____ triangle.

5 / 19

If an isosceles right angles triangle, angle other than right angle is each of ______

6 / 19

If ΔABC and ΔDEF are two similar triangles, then symbolically they are written as _____

7 / 19

If a, b and c are the sides of obtuse angle triangle, then the value of hypotenuse c is ____

8 / 19

How many obtuse angles in a triangle?

9 / 19

Which one of the following sets form a triangle?

10 / 19

A line segment has how many mid points?

11 / 19

If two sides of a triangle are unequal in length, the angle of the longer side opposite to it is of means____

12 / 19

Which of the following are the sides of a right angle triangles?

13 / 19

If one acute angled triangle is 25°, the other acute angle is _______

14 / 19

Angle for the minimum distance of a point “p” from the line segment AB will be _____

15 / 19

If adjacent angles of two intersecting lines are congruent then lines are _____

16 / 19

If 3cm and 4cm are two sides of a right angled triangle, then hypotenuse is _____

17 / 19

In a scalene triangle, the angle opposite to the largest side of measure ___

18 / 19

Point of intersection of the median of a triangle divides then ratio __________

19 / 19

Which of the following are the sides of a right angle triangles?

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Math Solution 9th Class (Science Group)

Exercise 1.1           (English)            (Urdu)


Exercise 1.2           (English)            (Urdu)


Exercise 1.3           (English)            (Urdu)


Exercise 1.4           (English)            (Urdu)


Exercise 1.5           (English)            (Urdu)


Exercise 1.6           (English)            (Urdu)


Exercise 1-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 2.1           (English)            (Urdu)


Exercise 2.2           (English)            (Urdu)


Exercise 2.3           (English)            (Urdu)


Exercise 2.4           (English)            (Urdu)


Exercise 2.5           (English)            (Urdu)


Exercise 2.6           (English)            (Urdu)


Exercise 2-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 3.1           (English)            (Urdu)


Exercise 3.2           (English)            (Urdu)


Exercise 3.3           (English)            (Urdu)


Exercise 3.4           (English)            (Urdu)


Exercise 3-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 4.1           (English)            (Urdu)


Exercise 4.2           (English)            (Urdu)


Exercise 4.3           (English)            (Urdu)


Exercise 4.4           (English)            (Urdu)


Exercise 4-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 5.1           (English)            (Urdu)


Exercise 5.2           (English)            (Urdu)


Exercise 5.3           (English)            (Urdu)


Exercise 5.4           (English)            (Urdu)


Exercise 5-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 6.1           (English)            (Urdu)


Exercise 6.2           (English)            (Urdu)


Exercise 6.3           (English)            (Urdu)


Exercise 6-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 7.1           (English)            (Urdu)


Exercise 7.2           (English)            (Urdu)


Exercise 7.3           (English)            (Urdu)


Exercise 7-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 8.1           (English)            (Urdu)


Exercise 8.2           (English)            (Urdu)


Exercise 8.3           (English)            (Urdu)


Exercise 8-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 9.1           (English)            (Urdu)


Exercise 9.2           (English)            (Urdu)


Exercise 9.3           (English)            (Urdu)


Exercise 9-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 10.1           (English)            (Urdu)


Exercise 10.2           (English)            (Urdu)


Exercise 10.3           (English)            (Urdu)


Exercise 10.4           (English)            (Urdu)


Exercise 10-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 11.1           (English)            (Urdu)


Exercise 11.2           (English)            (Urdu)


Exercise 11.3           (English)            (Urdu)


Exercise 11.4           (English)            (Urdu)


Exercise 11.5           (English)            (Urdu)


Exercise 11-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 12.1           (English)            (Urdu)


Exercise 12.2           (English)            (Urdu)


Exercise 12.3           (English)            (Urdu)


Exercise 12-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 13.1           (English)            (Urdu)


Exercise 13.2           (English)            (Urdu)


Exercise 13-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 14.1           (English)            (Urdu)


Exercise 14.2           (English)            (Urdu)


Exercise 14-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 15           (English)            (Urdu)


Exercise 15-Rev   (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 16.1           (English)            (Urdu)


Exercise 16.2           (English)            (Urdu)


Exercise 16-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions

Exercise 17.1           (English)            (Urdu)


Exercise 17.2           (English)            (Urdu)


Exercise 17.3           (English)            (Urdu)


Exercise 17.4           (English)            (Urdu)


Exercise 17.5           (English)            (Urdu)


Exercise 17-Rev      (English)            (Urdu)


Online Practice/ Test - MCQs & Short Questions


9th Math Science Group (English Medium)


9th Math Science Group (Urdu Medium)


9th Math Arts Group (Urdu Medium)



9th Class Math Solution:

We know, the importance of mathematics study in every class is important for students, such like students of 9th Class & 10th Class or other classes. If we talk Matric Classes Student of Science Classes or Arts classes, Math is equally important for both Classes.

Every Student of 9th & 10th Class is trying to search the topic like “9th Class math solution pdf”, 10th Class Math Solution PDF”, 9th Class Math MCQs Chapter-06, 9th Class Math Notes Chapter-15, Class 9 Math MCQs Chapter-15.

 

Class 9 Mathematics  Chapter-Wise MCQs

Category: 09th Math Startup

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Math Ch#08, 09th Class

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1 / 29

The point of intersection of two coordinate axis is called _______

2 / 29

Graph of the equation x=a is a ________ line

3 / 29

If “A” and “B” are any two sets then their cartesian product is denoted by ______

4 / 29

If the equation y=mx, y-coordinate of every point is ____ times of x-coordinate.

5 / 29

For equation 2x+y=6, order pair _____ is the solution of equation.

6 / 29

A n-ordered associated with a point in 2-dimensional plane is called _____

7 / 29

According to Pythagoras theorem (altitude)2 = ________

8 / 29

In a right-angle triangle, larger angle measures as _______

9 / 29

The line of the equation x=3 is parallel to _______

10 / 29

The angle between two coordinate axis is _________

11 / 29

Cartesian plan is divided into ____ Quadrant

12 / 29

the plan formed by two straight lines perpendicular to each other, these lines are called ______

13 / 29

The point (0, 5) lies on _______

14 / 29

In two-dimensional plan, the vertical line is called ______

15 / 29

In ordered pair (a, b), b Is called _______

16 / 29

In equation y=mx+c, if x=0 then line is parallel to __________

17 / 29

In ordered pair (a, b), a is called as ________

18 / 29

If a, b, and c are the side of right-angle triangle and c is hypotenuse then according to the Pythagoras theorem _________

19 / 29

In Cartesian plan, the point (2,0) lies on _______

20 / 29

If ordered pair (x, y) is in 2nd quadrant then ______

21 / 29

If ordered pair (x, y) is in 1st quadrant then ______

22 / 29

The graph of the equation y=b is a line and at a distance of b unit from _______ points on x-axis

23 / 29

In Cartesian coordinate plane, the point (3, -4) is located in ________

24 / 29

In two-dimensional plan, the horizontal line is called ______

25 / 29

Pythagoras is a _____ mathematician.

26 / 29

The point (5, 0) lies on ______

27 / 29

n the equation M=f(k), which statement is true?

28 / 29

the plan formed by two straight lines perpendicular to each other, this plan is called _______

29 / 29

If ordered pair (x, y) is in 4th quadrant then ______

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Math Ch#12, 9th Class

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Welcome

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1 / 18

Any point inside an ____ equidistant from its arms is on the bisector of it.

2 / 18

Bisection means to divided the parallelogram into _______ triangles.

3 / 18

A line segment has _____ midpoint

4 / 18

The distance between a line and a point on same line is _________

5 / 18

Angle bisector of triangle are _______Concurrent

6 / 18

Right bisector of any _________ means to draw perpendicular which passes through the midpoint of a line segment.

7 / 18

Bisection of an angle means to draw a ray to divide the given angle into ____ equal parts.

8 / 18

How many mid points a line segment has?

9 / 18

In any triangle, ______ of angles are concurrent.

10 / 18

If the bisector of any angle of a triangle bisects side opposite to it, then the triangle is _______

11 / 18

Sum of interior angles of a quadrilateral is ________

12 / 18

Tight bisectors of sides of an obtuse angles triangle meet _______

13 / 18

In an acute angled triangle, _______ angles are less than 90 degree.

14 / 18

In any triangle, bisectors of _____ are concurrent (Similar)

15 / 18

The circumcenter is used to _____ about a triangle.

16 / 18

If diagonals of a quadrilateral divide the figure in four congruent triable then the quadrilateral is  ____

17 / 18

Right bisection of three sides of triangle are _______

18 / 18

The right bisector of the sides of a ___________triangle, intersect each other on the hypotenuse.

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Math Ch#09, 9th Class

Here MCQs for your Revision

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Welcome

You Should Enter your Name

1 / 14

Two or more than two points which lie on the same straight line are called ________ points

2 / 14

A closed figure in a plane obtained by joining three non-collinear point is called _______

3 / 14

_____ is the study of geometrical shapes in the Cartesian plane (coordinate plane).

4 / 14

Mid point of the points (2, 2) and (0, 0) is _____

5 / 14

A triangle having all sides different is called ______

6 / 14

Distance between point (0, 0) and (1, 1) is _______

7 / 14

Distance between the point (1, 0) and (0, 1) is ________

8 / 14

distance between the points (0, 0) and (3, 4) is _______

9 / 14

The 3-points P, Q and R are ___________ if |PQ| + |QR| = |PR|

10 / 14

A triangle having equal length of at least two sides is called ______ triangle

11 / 14

The study of _________ in a plane is called plane geometry.

12 / 14

Mid point of the points (-2, 2) and (2, -2) is _____

13 / 14

A triangle having all sides equal is called ______

14 / 14

A triangle which have one of the angle 90 degree is called ______ triangle

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Math Ch#1, 09th Class

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1 / 38

Matrix A + B can be found, if ________________

2 / 38

Which is order of a square matrix?

3 / 38

If \begin{vmatrix} 3 & -1\\ 0 & x \end{vmatrix}  = 3, then x is equal to _______

4 / 38

Adjoint of \begin{bmatrix} 1 & 2\\ 0 & -1 \end{bmatrix} is ________

A = \begin{bmatrix} -1 & -2\\ 0 & 1 \end{bmatrix}

B = \begin{bmatrix} 1 & -2\\ 0 & -1 \end{bmatrix}

C = \begin{bmatrix} -1 & 2\\ 0 & -1 \end{bmatrix}

D = \begin{bmatrix} -1 & 0\\ 2 & 1 \end{bmatrix}

5 / 38

Product of \begin{bmatrix} x & 4 \end{bmatrix}\begin{bmatrix} 2\\ -1 \end{bmatrix} is _____

6 / 38

The order of Matrix \begin{bmatrix} 2 & 1 \end{bmatrix} is _______

7 / 38

(AB)ˉ¹ = ______

8 / 38

If \begin{bmatrix} a+3 & 5\\ 6 & 4 \end{bmatrix} = \begin{bmatrix} 5 & 5\\ 6 & 4 \end{bmatrix} , then "a" is equal to ____

9 / 38

If A=\begin{bmatrix} 4 & 5 \end{bmatrix} and B = [ 5 ], then the which product is possible ?

10 / 38

Two Materices A and B are confirmable for multiplication if ______

11 / 38

A square matrix in which non-diagonal elements are zero, whereas all diagonal elements are equal is called _______

 

12 / 38

\begin{bmatrix} 0 & 0\\ 0 & 0 \end{bmatrix} is called _________

13 / 38

Order of transpose of \begin{bmatrix} 2 & 1\\ 0 & 1\\ 3 & 2 \end{bmatrix} is _______

14 / 38

If for Matrix At = -A, then Matrix A is Called ______

15 / 38

A matrix is called a square matrix if its order is _____

16 / 38

A Matrix is called _______ , if number of rows and columns are equal

17 / 38

\begin{bmatrix} 1 & 0\\ 0 & 1 \end{bmatrix} Matrix is called _________

18 / 38

In Matrix multiplication, in general, A.B ___ B.A

19 / 38

Order of Matrix \begin{bmatrix} 3\\ -1\\ 6 \end{bmatrix} is _______

20 / 38

Matrix \begin{bmatrix} \sqrt{2} & 0\\ 0 & \sqrt{2} \end{bmatrix} is called ______

21 / 38

A square Matrix A is said to be _____ matrix if |A|=0.

22 / 38

The order of a matrix [ 1   2 ] is _____

23 / 38

Two matrices are said to be confirmable for _______ if they have same order.

24 / 38

\begin{bmatrix} \sqrt{2} & 0\\ 0 & \sqrt{2} \end{bmatrix} is called ____ Matrix

25 / 38

The Matrix of the same order _____ satisfy commutative law under addition.

26 / 38

Product of \begin{bmatrix} 2 & 0\\ 0 & 1 \end{bmatrix}\begin{bmatrix} -3 & 0\\ 0 & 4 \end{bmatrix} is ______ (Select correct option)

  1. \begin{bmatrix} -6 & 0\\ 0 & 4 \end{bmatrix}
  2. \begin{bmatrix} 6 & 0\\ 0 & 4 \end{bmatrix}
  3. \begin{bmatrix} 6 & 0\\ 0 & -4 \end{bmatrix}
  4. \begin{bmatrix} -6 & 0\\ 0 & -4 \end{bmatrix}

27 / 38

Adjoint of \begin{bmatrix} 2 & 1\\ -1 & -3 \end{bmatrix} is ________

  1. \begin{bmatrix} -3 & -1\\ 1 & 2 \end{bmatrix}
  2. \begin{bmatrix} 3 & -1\\ 1 & 2 \end{bmatrix}
  3. \begin{bmatrix} -3 & 1\\ 1 & -2 \end{bmatrix}
  4. \begin{bmatrix} 2 & 1\\ 1 & 3 \end{bmatrix}

28 / 38

Inverse of a Matrix A is equal to ________

29 / 38

if X + \begin{bmatrix} -1 & -2\\ 0 & -1 \end{bmatrix} = \begin{bmatrix} 1 & 0\\ 0 & 1 \end{bmatrix} , then X is equal to ________

A = \begin{bmatrix} 2 & 2\\ 2 & 0 \end{bmatrix}

B = \begin{bmatrix} 0 & 2\\ 2 & 2 \end{bmatrix}

C = \begin{bmatrix} 2 & 0\\ 0 & 2 \end{bmatrix}

D = \begin{bmatrix} 2 & 2\\ 0 & 2 \end{bmatrix}

30 / 38

Additive Inverse of \begin{bmatrix} 1 & -2\\ 0 & -1 \end{bmatrix} is ______

A = \begin{bmatrix} 1 & 2\\ 0 & 1 \end{bmatrix}

B = \begin{bmatrix} -1 & -2\\ 0 & -1 \end{bmatrix}

C = \begin{bmatrix} -1 & 2\\ 0 & 1 \end{bmatrix}

D = \begin{bmatrix} 0 & 0\\ 0 & 0 \end{bmatrix}

31 / 38

If A is a Square Matrix and At =A, than A is called ________

32 / 38

A matrix obtained by interchanging Rows and Columns, is called _______ of matrix

33 / 38

Let A and B are two matrices of the same order and A+B=0, then A and B are said to be _____ of each other.

34 / 38

If A, B and C are three matrices such that AB=C, then ________ (Which is possible)

35 / 38

The Matrix \begin{bmatrix} 1 & 2 \end{bmatrix} is a ______ Matrix.

36 / 38

An Identity Matrix (Unity Matrix) is always a _____

37 / 38

if \begin{vmatrix} 2 & 6\\ 3 & x \end{vmatrix} = 0 then x is equal to ________

38 / 38

[ 5 ] is a matrix with order ______

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