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

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

A square matrix A is said to be singular if

• 
  A
• 
  B
• 
  C
• 
  D

• 
  A
• 
  B
• 
  C
• 
  D

In decimal system base of system is:

• 2 A
• 5 B
• 8 C
• 10 D

Order of the matrix having m rows and n columns is:

• m + n A
• m - n B
• m / n C
• m x n D

Any matrix "A" is a symmetric matrix if:

• A = -A A
• A = A^t B
• A = -A^t C
• A = A^-t D

• 
  A
• 
  B
• 
  C
• 
  D

We cannot find the inverse of a:

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

If A is  a singular matrix then:

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

The order of matrix [a]

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

Any matrix "A" is a symmetric matrix if

• A = A A
• A = A^t B
• A = -A^t C
• A = A-I D

I3 x | I₃ | = ?

• I₃ A
• 0 B
• 1 C
• None of these D

A + 0 is equal to:

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

If Ax = B then x is

• BA^-1 A
• AB B
• B/A C
• A^-1 B D

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