First Year Business Mathematics Chapter 5 Online MCQ Test for 1st Year Business Mathematics Chapter 5 (Elements of Matrix Algebra)

A square matrix A is said to be singular if

• 
  A
• 
  B
• 
  C
• 
  D

A + 0 is equal to:

• 0 A
• A B
• O + A C
• None of these D

I3 x | I₃ | = ?

• I₃ A
• 0 B
• 1 C
• None of these D

• Equal A
• Possible B
• Not possible C
• Zero D

Do AB = BA?

• Never A
• Yes B
• May or may not C
• None of these D

Cramer's rule is used to solve

• System of quadratic equation A
• System of linear equation B
• Any system of equation C
• None D

The order of matrix [a]

• 1 x 1 A
• 2 x 1 B
• 0 x 1 C
• 1 x 0 D

We cannot find the inverse of a:

• Square matrix A
• Diagonal matrix B
• Triangular matrix C
• Singular matrix D

• Unit matrix A
• Diagonal matrix B
• Square matrix C
• Singular matrix D

• 
  A
• 
  B
• 
  C
• 
  D

In decimal system base of system is:

• 2 A
• 5 B
• 8 C
• 10 D

Do (A + B) + C = A + (B + C)?

• No A
• Yes B
• May or may not C
• Never D

If A is  a singular matrix then:

• A = 0 A
• |A| = 0 B
• A ≠ 0 C
• |A| ≠ 0 D

A square matrix whose elements below the main diagonal are all zero is called.

• Upper triangular matrix A
• Lower triangular matrix B
• Rectangular C
• Row matrix D

2 x 10 + 3 x 10^o =.

• 23 A
• 24 B
• 25 C
• 26 D