1st Year Business Maths Chapter 5 TestUNIT 5: Elements of Matrix Algebra

Q1. Multiple choice questions (Attempt all · 10 × 1 = 10)

1. If , then matrix will be:

   1. 

   2. 

   3. 

   4. 

2.  matrix is:

   1. None-singular

   2. Singular

   3. Identity

   4. All

3. In order of matrix A is 2 x 2 and order of matrix B is 2 x 1 then order of (AB)^t will be:

   1. 2 x 1

   2. 1 x 2

   3.  2 x 2

   4. 1 x 1

4. Order of the matrix [ 1 2 8 3] is:

   1. 3 x 1

   2. 3 x 3

   3. 1 x 3

   4. 1 x 2

5.  is called:

   1. Transpose of A

   2. Inverse of A

   3. Minor of A

   4. Adjoint of A

6.  matrix having single row is called:

   1. Row matrix

   2. Singular matrix

   3. Square matrix

   4. Null matrix

7. Inverse of square matix A is not possible if:

   1. |A|=1

   2. |A|=2

   3. |A|=0

   4. 

8. If matrixes A and B are non singular, then (AB)^-1=1:

   1. A^-1B^-1

   2. AB

   3. B^-1A^-1

   4. AB

9. The order of matrix  is:

   1. 1 x 2

   2. 2 x 1

   3. 2 x 2

   4. 2 x 3

10. Which one is not true in general:

    1. A+B=B+A

    2. AB=BA

    3. A+(B+C)=(A+B)+C

    4. A(BC)=(AB)C