First Year Mathematics Chapter 3 Online MCQ Test for 1st Year Mathematics Chapter 3 Matrices and Determinants Preparation

• 5 A
• -5 B
• -4 C
• 4 D

If A is a square matrix order 3 × 3 the |kA| equals:

• k |A| A
• k²|A| B
• k³ |A| C
• k⁴ |A| D

If A is a matrix of order m × n and B is a matrix of order n × p then the order of AB is:

• p×m A
• p×n B
• n×p C
• m×p D

If A is non singular matrix then A^t is:

• singular A
• nonsingular B
• symmetric C
• none D

• ab - cd = 0 A
• ac - bd = 0 B
• ad - bc = 1 C
• ad - bc = 0 D

For a square matrix A, |A| equals:

• A^t A
• |A^t| B
• -|A^t| C
• -A^t D

• 5 A
• 14 B
• 20 C
• 6 D

If A and B are two matrices, then:

• A B = O A
• AB = BA B
• AB = I C
• AB may not be defined D

• 
  A
• 
  B
• 
  C
• 
  D

• 1 A
• -1 B
• -6 C
• 6 D

A matrix in which each element is 0 is called:

• 
  A
• 
  B
• 
  C
• 
  D

• 9 A
• -9 B
• -6 C
• none D

• 3 A
• -3 B
• 1/3 C
• -1/3 D

• 
  A
• 
  B
• 
  C
• 
  D

• 40 A
• -40 B
• 26 C
• -26 D

If AB = BA = I, then A and B are:

• equal to each other A
• multiplicative inverse of each other B
• additive inverse of each other C
• both singular D

• 
  A
• diagonal matrix B
• 
  C
• 
  D

• scalar matrix A
• diagonalmatrix B
• triangularmatrix C
• none of these D

The order of a matrix is shown by:

• 
  A
• number of columns + number of rows B
• number of rows × number of columns C
• number of columns - number of rows D

[0] is a:

• 
  A
• 
  B
• 
  C
• 
  D